What is shreks pizza?

As an AI language model, I don't have access to current information about specific local pizza restaurants.

However, in the popular animated movie "Shrek", the character of the same name is depicted as enjoying onions on his pizza. There is no mention of a "Shrek's Pizza" brand or restaurant within the movie or any official merchandise related to it. It is possible that a pizza restaurant may have used the character's name for promotional purposes, but any information on such an establishment would need to be researched locally.