Combine the chilli sauce, peanut butter and soy sauce. Cover the chicken with 2 tbsp of the marinade, set aside the remainder of the marinade. Season the chicken. Heat the oil in a non-stick frying pan. Fry the chicken over a medium heat for approx. 5 mins. on each side.
Mix the reserved marinade with water and cornflour, add to the chicken, simmer for approx. 5 mins.