Fajita Chicken Casserole

or 4 small chicken breasts (1 1/2 lbs – 750g) skinless, boneless – or 2 large chicken breasts, split lengthwise

bell peppers, red and green, seeded and cut into strips

 medium onion, minced

 teaspoon cumin powder

 teaspoon chili powder

 teaspoon garlic powder, or minced garlic

 teaspoon paprika

Salt and fresh cracked pepper

 tablespoon vegetable oil

shredded Mozzarella (or your favorite cheese, Pepperjack, Monterrey Jack, Cheddar…)

Fresh chopped cilantro, or parsley, for garnish