Cut chicken breast into bite-sized pieces.
Prepare the vegetables (onion, carrot, bell pepper, etc.) by slicing them into easy-to-eat pieces.
Heat some cooking oil in a pan and stir-fry the chicken breast.
When the chicken is halfway cooked, add the vegetables and stir-fry together.
Add the rice and mix everything well, continuing to stir-fry.
Season with soy sauce, salt, and pepper.
Plate and serve.