An affectionate perjorative applied to an individual who is out of his or her element usually due to carelessness instead of contrivance.
Chiefs announce themselves through actions instead of words: by taking ownership of or authoriy over topics outside their bailiwick OR by dressing or decorating oneself or one's surroundings in a manner that is not suited to one's habits.
Contrast with poseur, who has dubious purposes. The Chief is characterized by haplessness and poses no threat to anyone except him or herself.
Carson Daily is an extraordinary chief.
I picked up a tourist from the bus station. The chief was there with his hip-pack on looking at a vending machine.