Cut the bok choy and chicken breast into bite-sized pieces.
Season the chicken breast with salt and pepper.
Add cooking oil to a pan and stir-fry the chicken breast.
Once the chicken breast is cooked, add the bok choy and continue stir-frying.
Add soy sauce and minced garlic, then stir-fry together.
When all the ingredients are cooked, turn off the heat and transfer to a plate.