Make these easy Slow Cooker Chicken Fajitas with tender chicken, smoky spices, and colorful bell peppers. Packed with about 28g protein per serving, this family-friendly crockpot dinner is perfect for busy nights!
Pour the fire-roasted crushed tomatoes into the bottom of the slow cooker (dump whole can, do not drain). Place chicken breasts on top of the tomatoes. Add garlic powder, chili powder, smoked paprika, oregano, salt, and (if using) cumin. Squeeze in the juice of ½ lime and place the rind in the slow cooker as well. Turn the chicken to coat in the tomato-lime mixture and seasonings.
Layer the sliced onion evenly over the chicken.
Cover and cook on low for 6–7 hours or high for 3–4 hours, until the chicken is cooked through and you can easily shred it (but don’t shred yet). Layer the sliced bell peppers over the top. Cover and cook for another 30 minutes, until the peppers are tender-crisp. Take out the lime rind and discard.
Once peppers are done, shred the chicken with two forks and stir everything together. Spoon into tortillas, over rice, or into bowls. Add toppings like avocado, salsa, sour cream, cheese, or cilantro if desired.