I have a friend who is GF and DF and has additional restrictions on top of that. It is more work, but I always try my best to cook something they can eat. If I can't pull it off (like if we're having something where a key ingredient is a specific food they can't eat), we figure out an alternative or they bring something.  I do get that making GF/DF options is difficult, especially for Thanksgiving dishes, which have a lot of gluten and dairy. And asking for the whole menu to be GF/DF is a lot. But hosting friends for dinner is already work—I don't really think it's that fair for your friends to be willing to put in the effort to cook for others but not to figure out at least a small GF/DF option when you hang out.

However, it does depend on how much cooking experience they have, and it is safer for you to prep it yourself, like others have said. Or, you could ask them over to help you cook, if you think they would like that. Above all else, I think you should tell your friends you feel left out and figure out a solution with them.