Heat oven to 400°F. Grease 12-inch pizza pan with shortening, or spray with cooking spray. Unroll dough in pan. Starting at center, press out dough with hands, forming 1/2-inch rim.
Bake 12 to 15 minutes or until golden brown. Immediately spread with hazelnut spread; sprinkle with dark chocolate and semisweet chocolate chips. Bake 1 to 2 minutes longer or just until chocolate begins to melt.
In small microwavable bowl, microwave white vanilla baking chips and vegetable oil uncovered on High 30 to 60 seconds, stirring every 15 seconds, until melted. Sprinkle hazelnuts on pizza. Drizzle with melted white chips. Cool 5 minutes. Cut into wedges. Serve warm.