Gluten and soy-free Christmas?! 😳

Jocelyn • I am a vegan lesbian in rural New England pregnant with our first child. TTC'ed for 9 months
I'm hosting Christmas this year and my dad can't eat soy or legumes, so I was going to make a seitan roast... then my sister in law texts me and says that her dr. just told her to go off gluten for the month and can I please make a gluten-free Christmas meal? 😞
Anyone have any ideas for me? I can figure out everything except for the protein centerpiece.