Cut the chicken breast into bite-sized pieces.
Slice the onion and bell pepper thinly.
Add cooking oil to a pan and stir-fry the chicken breast.
Once the chicken is cooked, add the vegetables and stir-fry together.
Season with soy sauce, oligosaccharide, and black pepper.
Place the stir-fried ingredients on top of the rice.
Sprinkle sesame seeds and green onions on top as desired.