"The plate you pictured the pizza resting on? Amazing!!! A half plate just for food photography? So great. I totally approve of your plating. ;-)" —tamibrat, on "Red Baron By the Slice Reality Check"
Not quite, tamibrat. It's actually a pizza-shaped plate by Atypyk:
Unfortunately, the Design Store no longer stocks it, and Atypyk's product page for it seems to indicate that it is out of stock.
Another piece for my small but growing Slice Pizza Museum.