Cut the chicken breast into bite-sized pieces.
Finely chop the onion and green onion.
Beat the eggs in a bowl.
Heat cooking oil in a pan over medium heat.
Add the chicken breast and stir-fry.
Once the chicken is cooked, add the onion and green onion and stir-fry.
Add rice and stir-fry, mixing with the other ingredients.
Add the eggs and mix well until cooked through.
Season with soy sauce, salt, and pepper.
Once everything is well combined, transfer to a plate and serve.