Minecraft wiki entry for Jack_o%27Lantern, associated text: In Java Edition, zombies, zombie villagers, husks, skeletons, strays, wither skeletons, and zombified piglins have a chance of wearing a jack o'lantern if they spawn during Halloween. If a mob wearing a jack o'lantern is killed using a tool enchanted with Looting, there is a chance equivalent to the level of Looting used to drop the jack o'lantern, up to a maximum of a 3% chance of a drop. The jack o'lantern does not emit light while being worn.