We went to Teppan Edo last year and have someone in our party who is allergic to anything in the nightshade family (including tomatoes, chili peppers, paprika, tamales, tomatillos, pimentos, cayenne, etc).

When we mentioned this at Check-In the Manager came over to talk to us to find out exactly what my friend couldn't have, checked the ingredients of everything that was being brought out, spoke to the Chef who would be cooking for us and came back and confirmed what would be unsuitable and that they would make sure that things were cooked in such a way there was no cross-contamination.

They couldn't have been more helpful - and we found that at every Disney restaurant