Artisan style kale, mushroom, & feta cheese flatbread pizza

Crust (enriched wheat flour [wheat flour, niacin, reduced iron, ascorbic acid as dough conditioner, thiamine mononitrate, riboflavin, folic acid, enzyme], water, soybean oil and/or canola oil, cultured wheat flour, salt, sugar, dried sourdough [wheat flour, rye flour, yeast, ascorbic acid, enzyme], vegetable mono - and diglycerides, yeast, inactive yeast, extra virgin olive oil, enzyme, durum wheat semolina), mozzarella cheese (cultured pasteurized milk, salt, enzymes), creme fraiche sauce (water, seasoning [cultured cream {cream, nonfat milk, culture, enzymes}, modified corn starch, sugar, lactic acid, salt]), kale, mushrooms (mushrooms, water, salt, citric acid, ascorbic acid), feta cheese (pasteurized milk, salt, cheese cultures, enzymes), garlic, oregano.