Cut the chicken breast into bite-sized pieces.
Julienne the onion and bell pepper.
Heat olive oil in a pan and stir-fry the chicken breast over high heat.
When the chicken is cooked through, add the onion and bell pepper and stir-fry.
Add low-carb gochujang, soy sauce, minced garlic, and pepper to season.
Stir-fry over medium heat until all ingredients are fully cooked.