Step 1: Prep the Oven and Pan
Preheat oven to 450°F. Line a baking sheet with a silicone mat or lightly grease it. Sprinkle with cornmeal for extra texture.
Step 2: Make the White Sauce
In a small saucepan, melt butter over medium heat. Stir in roasted garlic and cook for 1 minute. Add flour and whisk constantly for another minute to form a roux.
Step 3: Add Milk and Cheese
Gradually whisk in skim milk and half and half. Add black pepper. Simmer, stirring, until thickened (about 3 minutes). Remove from heat and stir in Parmesan until smooth.
Step 4: Assemble the Pizza
Roll out dough into a 12-inch circle and place on prepared pan. Spread white sauce evenly over the surface. Top with shredded chicken, red onion, and mozzarella.
Step 5: Bake
Bake for 17 minutes, or until crust is golden and cheese is bubbling with light browning.
Step 6: Finish with Herbs
Remove from oven and sprinkle with thyme, oregano, and parsley. Slice and serve hot!