Wash the chicken thoroughly and cut it into appropriate sizes.
Cut potatoes, carrots, and onions into bite-sized pieces.
Add cooking oil to a pan and stir-fry the chicken.
Add soy sauce, sugar, and minced garlic to the chicken and stir-fry.
Add the vegetables and stir-fry together.
Pour 200ml of water and simmer over medium heat.
Add spicy green chili peppers and black pepper, and simmer until the sauce has reduced.
Plate the dish to finish.