Cut the chicken and vegetables into bite-sized pieces.
In a bowl, mix gochujang (Korean chili paste), red pepper powder, soy sauce, sugar, minced garlic, and other seasonings.
Coat the prepared chicken in the marinade and let it rest for 20 minutes.
Heat cooking oil in a pan and stir-fry the marinated chicken.
When the chicken is halfway cooked, add cabbage, sweet potato, onion, green onion, and rice cakes, then stir-fry together.
Once all the ingredients are cooked through and the marinade is well absorbed, it's ready to serve.