Your flop call was a piece of brilliance. I would now cap. Given the action preflop, the last thing I want to do is give someone with QQ an easy flop decision. Are you behind here? Sometimes. The point is, it's a huge pot, and you have a great hand. Calling again here is an option, but capping may remove a 4 or 5 out draw from donk, and could possibly clear up 2 king outs for you (if he has K10). Still, just calling can let you get a better grip on your opponents hands (seeing if they cap).

Given how you played it on the flop first time around folding is not entering my mind yet, barring ludicrous turn action.