Cut the chicken breast into bite-sized pieces.
Finely chop the onion, carrot, and other vegetables.
Add cooking oil to a pan and stir-fry the chicken breast.
Once the chicken is cooked, add the vegetables and stir-fry together.
Add the cooked rice and mix well with the ingredients as you fry.
Add oyster sauce and season to taste.
Mix everything well, stir-fry, and serve on a plate.