Cut chicken breast, onion, bell pepper, and broccoli into bite-sized pieces.
Heat olive oil in a pan and stir-fry the chicken breast first.
Once the chicken is cooked, add onion, bell pepper, and broccoli and stir-fry.
Mash tofu and add it to the pan, stir-frying as a substitute for rice.
Season with salt and pepper, then serve once all ingredients are evenly cooked.