Yes, you can ask. I'm just the opposite and like thighs and legs. I also am allergic to gluten so I ask for GF chicken, dark meat only. I can't have the gravy since it has gluten so I know you won't have a problem with that either. Edited to add funny story: On one trip, I ordered the chicken dark meat only. They forgot and brought me mixed. The server caught it and said, "oh no. Your chicken is wrong. I'll fix that". Now, you get something like 4 pieces of chicken with that meal. The server left the original and brought 4 more. We all still laugh at how hungry people around us must have thought I was to end up with 8 pieces of chicken.