I have made zucchini pizza. I recomend making the crust out of Zucchini only. Shred it, drain and dry it, press it into a circle, prepare as regular pizza. Worked fine and we had no questions.

Another idea for zucchini that I love is to shred it, saute it in olive oil with garlic and tomatos and use it as an alternative layer in lasagna. I generally replace the cheese layer with the vegetables. Our entire family loves it!