Combine all dressing ingredients into a blender and blend until smooth. Set aside.
Wash, dry, and cut up romaine lettuce and set aside.
Crust:
Combine flour, baking powder, garlic powder, pepper and salt in a bowl. Stir together. Add greek yogurt and egg, and either by hand or using a stand mixer with a dough hook attachment, mix until your dough is uniform. Flour the outside of the dough, as well as your surface and rolling pin, as the dough will be sticky.
Line 9×13 baking sheet with parchment paper, silicone baking mats, or spray VERY well with cooking spray. Using a rolling pin, roll your dough out until it mostly fills the size of the baking sheet. Carefully transfer dough to baking sheet, and continue to roll/spread it until it roughly fills out the sheet. It’s ok if it’s not perfect!
Spray with cooking spray and bake for ~18 minutes, until just lightly turning golden.
Toppings
Spread 3-4 tbsp of dressing over base of the pizza. Top with 1 cup of mozzarella cheese. Spread chicken over cheese evenly, leaving crust exposed. Top with remaining mozzarella and parmesan cheese. Bake 8-10 minutes, until cheese is fully melted. Remove and let cool slightly.
Toss romaine lettuce with remaining dressing and top pizza with salad mixture. Top with some additional Parmesan cheese, slice into 8 slices, and enjoy!
Store any leftovers separately in an airtight container in the fridge. Reheat in the oven or air fry at 370 for 5 minutes to crisp up base then top with salad, cheese, and enjoy.