Cut the bean sprouts, mushrooms, and chicken breast into bite-sized pieces.
Add cooking oil to a heated pan and stir-fry the chicken breast.
When the chicken is partially cooked, add the mushrooms and bean sprouts and stir-fry together.
Beat the eggs and add them to the pan, mixing well with the other ingredients as you stir-fry.
Add the rice and stir-fry everything together until well combined.
Season with salt and pepper to taste.
Transfer the finished fried rice to a bowl.