In situations where it looks like villain doesn't like his hand, I like to lead weak. In this case I would bet out ~$5. This accomplishes many things: In the event he has nothing, it induces a bluff since it looks like a weak probe bet. In the case where he has a K, he will raise you big and then you can rr allin since he will be committed. If he flat calls then you probably got a bet out of him where he would have checked behind you. Lastly, if he folds then you weren't gonna get anything out of him anyway.