1. Preheat oven to 425°.
2. On a lightly floured surface, pat dough into a 12-inch circle; gently place dough on a pizza pan coated with cooking spray. Spread pesto evenly over dough, leaving a 1/2-inch border around edges. Arrange grapes evenly over dough; top evenly with chicken. Top with garlic and mozzarella; sprinkle with Romano and pepper. Bake at 425° for 20 minutes or until crust is golden brown. Sprinkle with onions. Cut into 12 wedges.