Cut the chicken into bite-sized pieces.
Dice the onion, carrot, and potato.
Add oil to a pan and sauté the onion.
Add the chicken and stir-fry until the outside is cooked.
Add the potato and carrot and stir-fry together.
Add curry powder and water, and mix well.
Simmer on medium-low heat until the ingredients are cooked through.
Season with salt and pepper to taste.