Preheat an oven to 500°F, and set an oven rack in the lowest possible position. Lightly coat a pizza pan with nonstick cooking spray.
Stretch pizza dough into a round large enough to fit the pizza pan. Spread Alfredo sauce evenly over the pizza dough, then top pizza evenly with mozzarella cheeses and dusting of Parmesan cheese. Sprinkle a little more kosher salt on top of the pizza.
Transfer pizza to the oven on the lowest rack and cook until the crust is golden brown (bottom and crust) and the cheese is nice and bubbly (9 - 11 minutes). Finish the pizza with a sprinkling of chives.