Cut the chicken breast into cubes and set aside.
Finely chop the onion and garlic.
Heat oil in a pan and sauté the garlic and onion.
Add the chicken breast and stir-fry until cooked through.
Add the rice and stir-fry together.
Season with soy sauce, oyster sauce, and pepper.
Add vegetables such as bell pepper and green peas, and stir-fry.
When all ingredients are well combined, turn off the heat and it's ready.