Dice zucchini, chicken breast, and onion.
Beat the eggs well and set aside.
Heat cooking oil in a pan and stir-fry the chicken breast.
When the chicken is cooked, add the zucchini and onion and stir-fry.
Add rice and stir well to combine evenly.
Pour in the beaten eggs and quickly stir-fry everything together.
Season with soy sauce, pepper, and salt to taste.
Transfer to a plate and serve.