For crouching heavy kick - low kick wheel kick can punish it although don't cheese it too much since they can DP it.
EX rekka is also pretty good since it absorbs one hit if they cheese crouching heavy kick too much.
I'm not sure if you can use forward medium kick since blocking the crouching heavy kick might push you away too far.
Anti Air throw is pretty useless unless the opponent is jumping back or neutral jumping - it's mostly used for juggle finishers.
You can also use his jumping medium or heavy kick (i forgot which one makes you kick upwards) for AA.
If you're not sure of your options - roll is always pretty good when the opp is jumping for cross-up or landing in front of you (just make sure you're not rolling into a corner).
If you successfully roll out of a jump-in, you basically just reset their options.
If you can predict a jump-in, crouching heavy punch is very useful - if the 2nd hit hits the opp on air, it juggles and you can do an ultra from there.
At a certain distance, crouching heavy kick can also be used as anti air.