Not the greatest board to c-bet. And it's a pretty easy fold. Checking back here is a good option, since he's most likely stabbing his entire range OTT. We get a lot of value from his air, and he'll lightly call us down pretty light since the don't expect us to check back our overpairs here. I prefer to check back these types of flops. It disguises your hand and overall range. And when you check back a really strong hand here, it tells
people they can't just stab the turn when you check a flop that hits their range so much harder than it hits yours. In general, people are too weak/unbalanced when they check back wet board textures.
The lower stakes you play, the more passively players play their draws. You're going to see QJ/sets/two pair like almost 100% of the time. I seriously doubt fish who are passive limp Jx here and goes crazy when he flops an open-ender. And nobody really ever raises Jx anyway when the PFR c-bets this board fwiw. AA is a very bad stack-off here against 99% of the population. You have all QJ/sets/lots of two pairs/some 76s in your range, so I don't see why we need to defend AA here. Even at higher stakes, someone's stack-off range here has AA absolutely crushed.