Start by preheating your oven to 475°F (245°C). If you have a pizza stone, place it in the oven to heat as well.
On a lightly floured surface, roll out your pizza dough into a round shape, aiming for about 12 inches in diameter. Transfer the rolled dough to a baking sheet or pizza peel that has been dusted with flour or cornmeal to prevent sticking.
With a brush or your hands, lightly coat the surface of the dough with olive oil. This will help create a barrier and prevent the base from becoming soggy.
Using a spatula or the back of a spoon, evenly spread the alfredo sauce over the pizza dough, ensuring to leave a small border around the edges for the crust.
Evenly sprinkle the shredded mozzarella cheese across the alfredo sauce, making sure to cover all areas for a perfect cheesy layer.
Distribute the shredded chicken across the mozzarella. Season your pizza with garlic powder, Italian seasoning, and a pinch of salt and pepper to taste.
Layer the fresh spinach leaves on top of the chicken, and generously sprinkle the grated Parmesan cheese over the assemblage for an extra cheesy kick.
Carefully slide your pizza into the preheated oven (or onto the hot pizza stone). Bake for about 12-15 minutes, or until the crust is a beautifully golden brown and the cheese has melted and is bubbling.
Once your pizza is done baking, remove it from the oven and allow it to cool for a minute. This will make slicing easier and prevent burns.
Just before serving, garnish with the freshly chopped parsley to add a vibrant touch and enhance the flavors.