Preheat the oven to 500°F (260°C) and position a rack with a baking sheet or pizza stone inside.
In a small saucepan over medium heat, melt 1/4 cup salted butter, swirling occasionally until the butter turns a medium brown and gives a nutty aroma.
Immediately reduce heat to low and carefully stir in 1/2 cup heavy cream; the pan will sizzle—stir until it subsides.
Whisk in 3/4 cup grated Parmesan until fully melted and the sauce is smooth; season with salt and plenty of black pepper to taste, then remove from heat.
On a lightly floured surface, stretch or roll 1 lb pizza dough into a large circle to your preferred thickness.
Spread about half of the Alfredo sauce evenly over the dough, leaving a small border for the crust.
Toss 1 1/2 cups cubed rotisserie chicken with the remaining Alfredo sauce to coat, then distribute the sauced chicken evenly over the pizza.
Sprinkle 2 cups Italian blend grated cheese over the top and season with Italian seasoning to taste.
Bake on the preheated baking sheet or pizza stone for 8–10 minutes, or until the crust is crispy and the cheese is lightly browned.
Remove from oven, let rest 1–2 minutes, slice, and serve.