Wingstop

I ordered a five piece lemon pepper thigh (chicken only). I arrived at the Alameda, CA location (Blanding Ave) five minutes after my order was supposed to be ready. I was told it would be an additional 7 minutes. I returned to my car to wait. After 8 minutes I returned and picked up my order.
When I returned to my office I ate a piece with no issues. When I started to eat a second piece I noticed some pink coloring toward the center. As I pulled the thigh apart I saw blood red uncooked meat in the middle. I opened a third piece and found the same undercooked meat.