Cut the chicken breast into bite-sized pieces.
Slice cabbage, onion, and carrot thinly.
In a bowl, mix chicken breast with gochujang, soy sauce, minced garlic, chili powder, and oligosaccharide to marinate.
Add oil to a pan and stir-fry the marinated chicken breast.
Add the vegetables and stir-fry together with the chicken breast.
Stir-fry over medium heat until the chicken breast is fully cooked.