Preheat oven to 425°F (220°C).
In a large bowl, combine sliced chicken, bell peppers, and onion.
Mix spices in a small bowl, then sprinkle over the chicken mixture.
Add garlic, olive oil, and juice of one lime. Toss well to coat evenly.
Spread everything on a lined sheet pan in a single layer.
Bake for 20 minutes or until chicken is fully cooked (165°F internal temp).
While cooking, prepare rice and toppings.
Assemble bowls with rice, then top with the cooked chicken fajita mixture and desired toppings. Enjoy your Sheet Pan Chicken Fajita Bowl warm.