Clean the chicken and cut it into bite-sized pieces.
Dice the potatoes, carrots, and onions.
Add cooking oil to a pan and stir-fry the chicken.
Once the chicken is cooked, add the potatoes, carrots, and onions and stir-fry together.
Add soy sauce, sugar, minced garlic, black pepper, and water. Bring to a boil.
Simmer over medium heat until the ingredients are cooked and the sauce is reduced.
Finish by adding spicy chili peppers and green onions.