In a medium sized bowl, mix Greek yogurt, flour, 1 teaspoon Italian seasoning, and garlic powder until well combined.
Lightly dust baking sheet or round stone with self-rising flour.
Roll out dough on baking sheet or stone until it is as thin as you can make it without the dough tearing. If dough is sticking to the rolling pin, sprinkle a little flour on the dough and continue to roll it out (I was able to get my dough to roll out to a 12-inch circle, but it is okay if yours is not exactly 12 inches).
With a basting brush, lightly brush top of dough circle with 1 tablespoon Italian dressing.
Bake dough in oven for 12-15 minutes, or until dough is fully cooked and lightly browned on top.
While pizza crust is baking, heat oil in a large skillet over medium heat. Add red onion slices and cook 4-5 minutes or until crisp-tender. Remove onions from skillet and set aside.
In the same skillet, cook ground turkey with 1 teaspoon Italian seasoning about 6-8 minutes or until fully cooked, breaking up the meat as it cooks.
Beat together cream cheese and 3 tablespoons Italian dressing about 1 minute, or until it resembles the consistency of the cream cheese again. Using a spatula or the back of a spoon, spread cream cheese mixture over the pizza crust.
Top with cooked turkey. Sprinkle with mozzarella cheese and top with lettuce, tomato and red onion. Sprinkle top of the pizza with the remaining 1/4 cup Italian dressing.