I really think you should fold this preflop, especially if you are going to c/r the preflop raiser with TPNK when he bets a K high flop 4-handed, pot committing yourself in the process. On the flop, I see nothing wrong with a check/fold. Call the allin. You almost have odds to call against a better king, and there's a chance he has 2 clubs or something stupid like JJ.