Prepare all ingredients.

Cut the onion into bite-sized pieces or thin slices as preferred.

Cut the cabbage into similar bite-sized pieces.

Mix all the seasoning ingredients together: 2 tbsp gochujang, 3 tbsp chili powder, 1 tbsp soy sauce, 2 tbsp sugar, and 1 tbsp minced garlic.

Add the canned chicken breast, vegetables, and mixed seasoning to a pan.

Cook over medium heat. Add a little water if needed as vegetables release moisture.

Finish cooking on high heat with a little oil for a final stir-fry.