As bigfig said, your cat probably doesn’t have a chin. That said, you might consider feeling your cat’s chin to see if it’s actually a chin and not just fluff or something.
If you feel a boney protrusion similar to a human’s chin, then you should unironically contact an evolutionary researcher. They might be fascinated about your cat having an actual chin as humans and only humans (not even neanderthals) are the only known chin-havers. Who knows, your cat might be the “missing link” between chinned and chinless humanoids.