Cut the chicken breast into bite-sized pieces.
Julienne the onion and carrot.
Heat cooking oil in a pan and stir-fry the chicken breast.
When the chicken is cooked, add the vegetables and stir-fry together.
Season with salt, pepper, and soy sauce.
Place the stir-fried ingredients over rice.
Drizzle sesame oil and sprinkle sesame seeds as desired.