01 -
Get your oven heating to 400°F (200°C). Prepare a 9×13-inch casserole pan by spraying it lightly with some cooking oil for easy cleanup later.
02 -
Combine the chopped tomatoes, onion, jalapeño, and cilantro in a bowl. Stir in the lime juice and just half of the salt. Set it aside so the flavors have time to blend together while you work on the chicken.
03 -
Spread the chicken pieces out at the bottom of the casserole pan, keeping them in a single layer. Add the cumin, paprika, garlic powder, black pepper, chili flakes, and the remaining salt. Toss well to make sure every piece is coated in the spices.
04 -
Spread the prepared tomato salsa over the chicken evenly. Pour any leftover juices from the bowl over the top too. Finish by sprinkling shredded mozzarella cheese all across the surface.
05 -
Place the casserole in the hot oven and let it bake for 25 to 30 minutes. It'll be done when the chicken is cooked through (165°F/74°C inside), the cheese is melted and turning a golden color, and the tomato salsa has softened into a sauce-like texture.
06 -
Let the dish rest for about 5 minutes after you remove it from the oven. Sprinkle some cilantro on top for extra freshness. Serve it hot with sides like warm tortillas, rice, or a fresh salad.