Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
In a medium bowl, stir together the Greek yogurt, white whole wheat flour, baking powder, and sea salt until a shaggy dough forms.
Transfer the dough to a lightly floured surface and knead for 1-2 minutes until the dough is smooth and no longer sticky.
Roll the dough out into a thin 8-inch circle and place it onto the prepared baking sheet.
Pre-bake the crust for 5-7 minutes until it begins to set and the edges look slightly dry.
In a small ramekin, whisk together the tomato puree, dried oregano, and garlic powder to create the sauce.
Spread the sauce evenly over the pre-baked crust, leaving a small border for the crust edge.
Layer the shredded cooked chicken breast over the sauce, then sprinkle with the mozzarella cheese.
Arrange the turkey pepperoni slices on top of the cheese in a single layer.
Return the pizza to the oven and bake for 8-10 minutes until the cheese is bubbly and the crust is crisp and golden.
Allow the pizza to cool for 2 minutes before slicing into wedges.