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From the site Kalyn's Kitchen: "Admittedly, this is not a pizza in the truest sense of the word, but if you'd like pizza flavors with a "crust" that's gluten-free, low-glycemic, and low-carb, this is an idea you may end up liking just as much as I did!"
Portabello and Pesto Pizza. I'm not a huge fan of red pizza sauce, and prefer light sauce when I do order out. But using pesto instead of red sauce opens up a whole 'nuther world of nommy goodness for pizza! The blogger left off the olives, but I say, "bring 'em on!".