Cut the chicken breast into bite-sized pieces.
Cut the potatoes, carrots, and onions into large chunks.
Add oil to a pan and stir-fry the chicken breast.
Add the vegetables and stir-fry together.
Add soy sauce, water, sugar, and minced garlic, then bring to a boil.
Simmer on low heat for 20 minutes.
Add spicy peppers and glass noodles, and cook for an additional 5 minutes.
Serve in a bowl and garnish with green onions.