Brown ground beef with bacon and onions in large skillet on medium-high heat; drain. Return meat mixture to skillet. Add VELVEETA; cook 5 min. or until melted, stirring frequently. Cool 10 min.
Unroll pizza dough onto baking sheet sprayed with cooking spray. Press into 15×8-inch rectangle; top with meat mixture. Roll up, starting at one long side. Rearrange if necessary so roll is seam side down.