Cut the chicken breast, tofu, and onion into bite-sized pieces.
Add cooking oil to a pan and sauté the onion first.
Once the onion becomes translucent, add the chicken breast and stir-fry.
When the chicken is cooked, add the tofu and stir-fry together.
Add the rice and mix everything well while stir-frying.
Season with soy sauce, salt, and pepper.
Transfer the finished fried rice to a bowl.