First, make the baked buffalo chicken. Preheat oven to 375 degrees F. In a medium bowl, combine chicken, Frank's Red Hot, garlic powder, onion powder, chili powder, cayenne pepper, and salt. Stir well to combine, making sure the chicken is evenly coated in the marinade. Set aside and marinate at room temperature for 15 minutes.
Transfer chicken to a foil-lined pan and bake for 12 to 15 minutes, or until cooked through. Let rest for 2 to 3 minutes before slicing into strips, then set aside.
While the chicken bakes, prepare the buffalo pizza sauce. Add melted butter, Frank's Red Hot, and light ranch dressing to a small bowl and whisk to combine. Microwave the sauce for 10 to 15 seconds at a time, as needed, to ensure a smooth texture as you whisk it.
Next, combine mozzarella and cheddar cheese in a bowl and set aside.
Next, stretch the dough. Preheat oven to 400 degrees F and lightly dust a large baking sheet with flour, spreading it around evenly on the pan. Then, dust your palms with flour and begin to stretch the dough. Working over the baking sheet, use both hands (and gravity!) to rotate and stretch the dough into a rectangle roughly the size of your pan. Use additional flour as necessary to prevent the dough from sticking to your hands.*Lay your stretched dough flat in the pan. Dust your hands lightly with flour again, and gently reach underneath the dough to give the bottom side a very light coating of flour (this will keep it from sticking to the pan). Finally, assemble the pizza. Spoon the buffalo pizza sauce onto the dough a little at a time, spreading it around with the back of a spoon. Continue until the dough is covered with a thin layer of sauce, leaving about a half-inch border for the crust. You will likely have some sauce leftover - that's okay! You'll drizzle it on the pizza after it bakes.
Next, sprinkle handfuls of the cheese blend onto the pizza. Start from the edges and work in towards the center, using a lighter hand, then add more cheese where needed to fill in the gaps. Finally, top the pizza with sliced buffalo chicken, red onion, and scallions.
Lastly, season the crust to add some extra flavor! Brush the crust with melted butter and sprinkle lightly with garlic powder, onion powder, and sea salt.
Bake the pizza for about 16 to 18 minutes, or until the crust is golden and the cheese is bubbly and lightly browned. Cool for at least 2 minutes before slicing.
Finally, drizzle the pizza with the remaining buffalo sauce and light ranch dressing. Serve immediately.