Preheat the oven to 450°F (230°C). If using a pizza stone, place it in the oven as it heats.
Roll out the pre-made pizza dough on a floured surface to your desired thickness, typically about 12 inches in diameter. Transfer it to a baking sheet or a pizza stone.
In a mixing bowl, combine the Alfredo sauce, garlic powder, Italian seasoning, salt, and pepper. Mix well.
Spread the Alfredo sauce mixture evenly over the rolled-out pizza dough, leaving a small border around the edges for the crust.
Sprinkle the shredded chicken over the sauce, ensuring an even distribution.
Add the mozzarella and Parmesan cheese on top of the chicken. If using, scatter spinach leaves over the cheese.
Brush the exposed edges of the pizza dough lightly with olive oil for a golden crust.
Carefully transfer the pizza to the preheated oven. Bake for 12-15 minutes, or until the cheese is bubbly and slightly golden, and the crust is cooked to your liking.
Remove the pizza from the oven and let it cool for a few minutes. Slice into wedges and serve warm.