Help With Tire Wear Issue

I was having my tires rotated at 7,500 miles and noticed that the tread wear on my right front tire is wearing uneven. The best way to describe it is if you run the palm of your hand from the front to rear of the tire on the tread, your hand will get caught up at each knob. Sort of looks like a "step".

If you recall, my vehicle was involved in an accident back in Feb., and the frame needed to be replaced. Also, the accident area was in the right front part of the vehicle where this tire wear issue is taking place. According to the shop that performed the repairs on my vehicle, they said it aligned up perfect and within factory specs and that if anything was bent in the suspension, it would show up.

Is this true? If any of you have any experience, or know anyone with any experience with this sort of problem, please post and let me know so I can have my ducts aligned up when I go to this place.

I won't be paying out of pocket because my insurance company, USAA, warrants the repair for the life of the vehicle. I have since contacted them and they are aware of the situation. My vehicle is scheduled to be looked at August 16th.