If I were you, I'd take Jiko as well. I have not eaten there for Thanksgiving, but the food, in general, is much better there. I have eaten at Flying Fish on Thanksgiving day, and they had a mix of regular menu items (like the potato wrapped snapper), as well as fall inspired food. I had pumpkin ravioli that I still dream about!
If Jiko has additional special menu items, I don't think you can go wrong there either.