Heat large skillet over high heat. Drizzle in oil. Add chicken and stir fry until it loses its raw color, 2 to 3 minutes. Stir in shallots, garlic, and sliced chilies. Continue cooking on high heat until some of the juices start to caramelize in the bottom of the pan, about 2 or 3 more minutes. Add about a tablespoon of the sauce mixture to the skillet; cook and stir until sauce begins to caramelize, about 1 minute.