Wash and finely dice red onion, bell peppers, and mushrooms. Make rice according to package instructions.
Sauté ground chicken, red pepper, onion, and orange pepper together in the skillet. Stir constantly.
Add diced tomatoes (do not drain them from their juice) and mushrooms to the skillet. Stir until there is an ingredient in every bite.
Flatten the ingredients in the skillet and top the dish with cheese. Top with a lid for 2-4 minutes or until the cheese melts.