These slow cooker shredded chicken fajitas are the easiest way to feed a crowd on taco night. Chicken breasts cook gently with peppers, onions, garlic, and salsa in a homemade fajita seasoning, then get shredded and tossed right back into the juices. Ten minutes of prep, a few hours of waiting, and dinner is ready to pile into warm tortillas.
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Why These Slow Cooker Chicken Fajitas Work
Salsa keeps the chicken moist and adds tang without any extra effort. A homemade seasoning blend means you control the salt and heat, and a squeeze of lime at the end wakes everything up. Shredding the chicken and stirring it back into the peppers and juices makes every bite juicy.
- About 10 minutes of prep, then the slow cooker does the rest.
- Tender shredded chicken with soft peppers and onions.
- Great for tacos, bowls, salads, and burritos.
- Leftovers reheat well and are good for meal prep.
Ingredients
The full amounts are in the recipe card below.
- 2 pounds boneless, skinless chicken breasts
- 3 bell peppers in mixed colors, sliced
- 1 medium yellow onion, sliced
- 3 garlic cloves, minced
- 1 cup mild salsa
- 1 tablespoon olive oil and 2 tablespoons lime juice
- Seasoning: 1 tablespoon chili powder, 2 teaspoons cumin, 1 teaspoon each smoked paprika, garlic powder, onion powder, and salt, and 1/2 teaspoon dried oregano
- Warm tortillas and your favorite toppings, for serving
How to Make Slow Cooker Chicken Fajitas
Mix the Seasoning
Stir the chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and oregano together in a small bowl.
Layer the Slow Cooker
Spread half of the salsa on the bottom of a 5-quart slow cooker. Add half of the peppers, onion, and garlic. Lay the chicken on top, drizzle with the olive oil, and sprinkle with the seasoning. Pour over the remaining salsa and top with the remaining peppers and onions.
Cook Low and Slow
Cover and cook on low for 4 to 5 hours or on high for 2 1/2 to 3 hours, until the chicken shreds easily. The USDA safe minimum for chicken is 165°F, so check the thickest piece with a thermometer. Cooking much longer than needed can dry out lean breasts.
Shred and Serve
Move the chicken to a cutting board and shred it with two forks. Scoop out a cup or two of the extra liquid if the mixture looks soupy. Stir the chicken back into the peppers, add the lime juice, and adjust the salt. Serve with a slotted spoon in warm tortillas.
How to Serve Slow Cooker Chicken Fajitas
Pile the filling into warm flour or corn tortillas with sour cream, cheese, avocado, and salsa. It also works over rice for burrito bowls, on top of a salad, or in quesadillas. A scoop of our cilantro lime rice makes a great base.
How to Store and Reheat
Cool the chicken and vegetables, then store them with a little of the juices in an airtight container in the refrigerator for up to 4 days. Reheat in a skillet or the microwave with a splash of water until steaming hot. It also freezes well for up to 3 months. Thaw overnight in the fridge before reheating.
Tips and Variations
- Check the chicken early. Ovens and slow cookers vary, and breasts dry out if overcooked.
- Sear the onions and peppers in a skillet for 5 minutes first if you like a slightly charred flavor.
- Use chicken thighs for extra-forgiving, juicier meat, and cook them a little longer.
- Add a chopped chipotle in adobo for smoky heat.
- Skip the tortillas and serve the filling over cauliflower rice or greens for a lower-carb meal.
- Want another way to make chicken fajitas? Try our sheet pan chicken fajitas or the easy chicken fajitas.
- For an even faster version using cooked chicken, see our crock pot rotisserie chicken fajitas.
FAQ
How long do chicken fajitas take in the slow cooker?
Plan on 4 to 5 hours on low or 2 1/2 to 3 hours on high for boneless chicken breasts. Stop once the chicken reaches 165°F and shreds easily.
Do I need to add liquid?
The salsa, peppers, and onions release enough moisture, so you do not need to add broth. If the mixture is too wet after cooking, scoop some out before stirring in the chicken.
Can I use frozen chicken?
It is safer to thaw the chicken first. Frozen chicken spends too long in the temperature danger zone in a slow cooker.
Can I use chicken thighs instead?
Yes. Boneless thighs stay juicier and hold up to longer cooking. Cook them for about the same time or slightly longer.
How do I keep the peppers from getting mushy?
Add the peppers during the last hour of cooking, or cook on high for a shorter time. Thicker slices also hold their shape better.
Slow Cooker Shredded Chicken Fajitas
Ingredients
Main Ingredients
- 2 lb boneless, skinless chicken breasts
- 3 bell peppers mixed colors, sliced
- 1 medium yellow onion sliced
- 3 garlic cloves minced
- 1 cup mild salsa
- 1 tbsp olive oil
- 1 tbsp chili powder
- 2 tsp ground cumin
- 1 tsp smoked paprika
- 1 tsp garlic powder
- 1 tsp onion powder
- 1 tsp salt
- ½ tsp dried oregano
- 2 tbsp lime juice
- warm tortillas and toppings for serving
Instructions
Cooking
- Stir the chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, and oregano together in a small bowl.
- Spread half of the salsa on the bottom of a 5-quart slow cooker. Add half of the peppers, onion, and garlic.
- Lay the chicken on top, drizzle with the olive oil, and sprinkle with the seasoning. Pour over the remaining salsa and top with the remaining peppers and onions.
- Cover and cook on low for 4 to 5 hours or on high for 2 1/2 to 3 hours, until the chicken reaches 165°F (74°C) and shreds easily.
- Move the chicken to a cutting board and shred with two forks. Scoop out extra liquid if soupy.
- Stir the chicken back into the peppers with the lime juice and adjust the salt. Serve with a slotted spoon in warm tortillas.
