Cut the chicken breast into bite-sized pieces.
Prepare cabbage, onion, sweet potato, green onion, and other vegetables.
Make a marinade using gochujang, soy sauce, minced garlic, red pepper powder, oligosaccharide, and pepper.
Mix chicken breast, vegetables, and marinade together and let it marinate.
Heat cooking oil in a pan and stir-fry the chicken breast and vegetables.
Stir-fry over medium heat until all ingredients are cooked through.