Cut the chicken breast into bite-sized pieces.
Cut the cabbage, onion, and green onion into easy-to-eat pieces.
In a bowl, make the sauce by mixing gochujang, soy sauce, minced garlic, chili powder, and oligosaccharide syrup.
Add chicken breast, vegetables, and the sauce to a pan and mix well.
Stir-fry over medium heat until all ingredients are cooked through.