Most kitchens now separate the common allergy food from each other, my sister has similar allergies and has not had problems at Dukes, BLK, Blue Gold, and Ola in Huntington Beach, which are all great date spots! Worth checking out for sure, all of those places have great views of the beach and are some of the best places I take the wifey out to in the area.
You didn't say North or South County, so here goes-
North - Blue Gold in Huntington Beach at Pacific City. Bonus, go or the sunset, windows overlook PCH and the beach.
Central - Javiers in Crystal Cove - Newport Coast - decent but overpriced Mexican however, it's a very cool place and they know…