5-Ingredient Slow Cooker Chicken Breast Fajitas
Tender chicken breasts slow cook over sliced peppers and onions with fajita seasoning and juicy diced tomatoes. This easy five-ingredient Tex-Mex dinner is flavorful, versatile, and perfect for tacos, bowls, nachos, or meal prep.
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Ingredients
- 2 lb boneless skinless chicken breasts
- 3 bell peppers any colors, thinly sliced
- 1 large yellow onion thinly sliced
- 3 tbsp fajita seasoning store-bought or homemade
- 1 can diced tomatoes 14.5 oz, undrained
Instructions
- Slice the bell peppers and onion into thin strips.
- Arrange the sliced peppers and onion in an even layer in the bottom of the slow cooker.
- Pat the chicken breasts dry with paper towels.
- Rub the fajita seasoning over both sides of the chicken, pressing it in lightly.
- Place the seasoned chicken breasts on top of the peppers and onions.
- Pour the undrained diced tomatoes over the chicken and vegetables.
- Cover and cook on low for 4–5 hours, or on high for 2–3 hours, until the chicken is fully cooked and tender.
- Transfer the chicken to a cutting board and shred it with two forks.
- Return the shredded chicken to the slow cooker and stir it into the vegetables and juices.
- Taste and adjust with a pinch of salt or extra fajita seasoning if needed.
- Add a splash of water or broth if the mixture is too thick.
- Serve warm in tortillas or over rice with desired toppings.
Notes
Do not drain the tomatoes; the juices help keep the chicken moist. Serve with lime, sour cream, avocado, cheese, or hot sauce.
Nutrition
Serving: 1servingCalories: 215kcalCarbohydrates: 11.7gProtein: 31.8gFat: 3.5gSaturated Fat: 1gCholesterol: 54mgSodium: 437mgFiber: 2.5gSugar: 5.5g