1 cup CLASSICO Creamy Alfredo Pasta Sauce
1 pkg. (10 oz.) frozen chopped spinach, thawed, well drained
1 tsp. crushed red pepper
1 lb. refrigerated pizza dough, at room temperature
2 Tbsp. olive oil, divided
1 cup KRAFT Shredded Mozzarella Cheese
1 boneless skinless chicken breast (4 oz.), cooked, chopped (about 1 cup)
4 slices OSCAR MAYER Bacon, cooked, crumbled