Cut chicken breast, tofu, and vegetables (onion, bell pepper, carrot, etc.) into bite-sized pieces.
Heat olive oil in a pan and stir-fry the chicken breast.
Once the chicken is cooked, add the vegetables and tofu. Stir-fry together.
Season with salt and pepper.
Place the stir-fried ingredients on top of the rice, add cheese, cover with a lid, and wait until the cheese melts.