Cut the chicken thighs into bite-sized pieces.
Dice the potatoes, carrots, and onions.
Add oil to a pan and stir-fry the chicken thighs.
Once the chicken is cooked, add the potatoes, carrots, and onions and stir-fry.
Add gochujang (red chili paste), soy sauce, minced garlic, red pepper flakes, and sugar, and mix well.
Pour in 200ml of water and bring to a boil.
Simmer over medium heat until the ingredients are fully cooked.