Cut the chicken into bite-sized pieces.
Dice the potatoes, carrots, and onions.
Heat cooking oil in a pan and stir-fry the chicken.
Add potatoes, carrots, and onions to the chicken and stir-fry together.
Add seasoning sauce (gochujang, soy sauce, minced garlic, red pepper powder, sugar, pepper, water) and bring to a boil.
Cover with a lid and simmer over medium-low heat until the ingredients are cooked.
Add green onions and stir-fry a bit more to finish.