Cut the chicken breast into bite-sized pieces and season with salt and pepper.
Chop the mushrooms and vegetables (such as broccoli, onion, and bell pepper) into bite-sized pieces.
Heat olive oil in a pan and stir-fry the chicken breast first.
Once the chicken is cooked, add the mushrooms and vegetables and stir-fry together.
Season with soy sauce or herbs to taste.
Once all ingredients are cooked, plate and serve.