Cut chicken breast and vegetables into bite-sized pieces.
Heat a pan and add cooking oil.
Add the chicken breast and cook over medium heat.
Add the vegetables (carrot, onion, bell pepper, etc.) and stir-fry.
Add rice and stir-fry with the vegetables and chicken breast.
Season with soy sauce, salt, and pepper.
Mix everything evenly while stir-frying, then plate to serve.