Peel the potatoes and cut into bite-sized cubes. Cut the peppers into bite-sized strips. Cut the onion and the clove of garlic into cubes. Cut the chicken breast fillet into strips.
Fry the chicken, onion and garlic in a little oil (as brown as you like it best). Fry the potatoes and peppers briefly and then add the 500 ml vegetable stock and simmer until the potatoes are cooked. Season with salt, pepper and basil to taste.
Finally, you can thicken the remaining liquid with cornstarch or just leave it as it is.