Once you have the lavash, which we can buy at the grocery, making a lavash pizza is easy. This is a 14" diameter lavash. (I've made lavash a few times, the trick is to get it rolled out really thin so it gets crisp.)
I put the lavash on a big sheet pan, I start with some chunks of havarti cheese, add some shredded mozzarella, then I put on 1 small can's worth of mushrooms and about 6 artichoke hearts that have been quartered. I didn't have any fresh tomatoes today, otherwise I'd have sliced it into thin slices and put them on as well. (The picture below is from one I made a few weeks ago.)
I throw it in the oven at 425 degrees for about 5 minutes to get everything warm, then switch to the broiler for a few minutes to brown the cheese a bit. We use a pizza cutter to cut it into six pieces.