Heat oven to 350°F. Place bacon on ungreased cookie sheet. Bake 10 to 15 minutes or until crisp; drain, reserving drippings. Crumble bacon. Grease 12 regular-size muffin cups with drippings. Increase oven temperature to 400°F.
In 2-quart saucepan, steam asparagus in 1/2 inch water 6 to 10 minutes or until tender; drain. Cut up. Stir in pizza sauce. Add onion, garlic, olive oil and tomatoes. Simmer 5 minutes over medium heat, stirring occasionally.
Sprinkle work surface with cornmeal. On surface, unroll pizza dough to 16x12-inch rectangle. Cut dough into 12 (4-inch) squares.
In large bowl, mix shredded chicken, asparagus mixture and bacon. Spoon 1 heaping tablespoon mixture on each square, and top each with 1 tablespoon cheese. Fold up corners over filling, and shape into ball. Place seam-side down in muffin cup. Brush tops with bacon drippings.
Bake about 15 minutes or until tops are browned.