I would call the Poly/Concierge specifically.
My 1+ yo has allegies to dairy, nuts (tree & peanut), some beef & some egg.
I emailed Disney & they emailed me back the numbers to call for all the parks (it is a pre-typed email so not person specific).
I finally called last week or the week before & talked to Brenda (I think she works in EPCOT). She forwarded me a few attachements with some info & told me some other info.
She said all places have a card to read the ingredients & all the counter service places have a separate area to cook for people with food allergies.
She also sent an email to the Poly & the places we have PS/ADR's for.
Chef Mickey's chef actually called me and asked me some questions. I went to call CRT but it was Brenda who answered the phone & she said I didn't have to call anyone just let them know when I got there-plus it is on my reservation.
If you like sushi, I am sure they will make you a special order.
Good luck, stay safe & bring your epipen!