Cut the chicken breast into bite-sized pieces.
Julienne the onion and bell pepper.
Marinate the chicken breast with gochujang, soy sauce, minced garlic, red pepper powder, and oligosaccharide syrup.
Stir-fry the chicken breast in a pan, then add the onion and bell pepper and cook together.
Serve the stir-fried chicken over rice.
Top with mozzarella cheese and melt in the microwave.