I was interested and Googled it, LOL. Let's see...

PIZZA FLAVORED: beer, breadsticks, chicken tacos, chips, corn snacks, pretzels, popcorn, goldfish, pinto beans, pizza-in-a-cone (FYI: in a cone but not ice cream), soup, dog treats and bones, omelette, fish, pasta sauce, broccoli, pumpkin seeds, candy, ramen noodles, cheese, smoothie, beans, fondue, corn, beef jerky, catsup, macaroni and cheese, gummis, ice cream, corn dogs, bagel chips, marshmallow.

It seems there might be a demand for pizza flavored gum, LOL. I didn't find much about it being produced yet. Guess the closest I can come right now is pizza flavored gummi candy!