Hmm... looks like it has touched the exhaust a little. Are both sides like this? If its an aftermarket cat back maybe you can loosen some bolts and position it a little better. If not, it doesn't seems to rub it very bad I would leave it.
The other side is not like this. Just wondering cause its gonna settle some more. I might end up readjusting the exhaust like you said if the problem gets worse.