HEAT oven to 375ºF.
UNROLL pizza dough onto baking sheet sprayed with cooking spray; roll or press into 15x11-inch rectangle.
BAKE 8 to 10 min. or until lightly browned. Meanwhile, mix cream cheese spread, 1/4 cup Parmesan, milk and garlic powder in medium bowl until blended. Add spinach and artichokes; mix well.
SPREAD crust with cream cheese mixture; sprinkle with remaining Parmesan. Bake 8 to 10 min. or until heated through.