Mix the fish sauce, oyster sauce, coconut milk and sugar in a small bowl.
Heat the oil in a wok or frying pan and stir-fry half the garlic over medium heat until light brown. Add half the chilli jam and stir-fry for 2 minutes, or until fragrant. Add half of the chicken and stir-fry over high heat for 2–3 minutes. Remove from the wok. Repeat with t