Cut the chicken breast and vegetables into bite-sized pieces.
Heat olive oil in a pan and stir-fry the chicken breast.
When the chicken is half cooked, add vegetables like onion, bell pepper, and broccoli and continue stir-frying.
Season with gochujang (Korean chili paste), red pepper powder, minced garlic, and soy sauce.
Stir-fry until the veggies and chicken are cooked through, then finish with a drizzle of sesame oil.