IMO, given that you said he's a nit, I check the turn and even possibly the river.
I doubt he's on a FD...unless he called your PF bet with KhQh but he probably wouldnt call with less than that.
I think, by the turn he has TT+, AJ-AQ(for inside draw, although he prob wouldnt call AQ on the turn bet to hit it...)

I cant see what he's calling you with that you beat other than QQ or AJ...