If you do seek out a chiro, try one that does active release - it's a myofascial technique. My chiro doesn't even crack me anymore, just manual release and personal training - however OP is right to warn you, there's a lot of whackos there. I just happen to be an RMT so I know the industry well enough

​

I also suggest an RMT over a chiro entirely, but I don't want to be too biased ;)