Preheat oven to 450°F and lightly grease a large pizza pan or baking sheet.
Roll out pizza dough to desired thickness and place on prepared pan. Brush edges with olive oil and par-bake for 5 minutes.
In a small bowl, toss diced chicken with garlic powder and Italian seasoning until evenly coated.
Remove crust from oven and spread Alfredo sauce evenly over the surface, leaving a 1-inch border.
Sprinkle minced garlic over the sauce, then top with seasoned chicken pieces.
Cover with mozzarella and Parmesan cheeses, then bake for 12-15 minutes until crust is golden and cheese is bubbly.
Remove from oven, garnish with fresh parsley, slice, and serve hot.