Cut the chicken breast and pork into bite-sized pieces.
Slice the onion, green onion, and chili pepper.
Heat oil in a pan and stir-fry the chicken breast and pork.
Add the vegetables and stir-fry together.
Season with gochujang (Korean red chili paste), soy sauce, red pepper powder, and minced garlic.
Cook over medium heat until all the ingredients are cooked through.
Transfer the finished stir-fry to a plate.