BLT Dip 1 pound bacon, cooked, drained, crumbled,+divided; 2 (8-oz.) pkgs cream cheese, softened; 2 c. shredded mozzarella cheese; 2 c. shredded Fontina cheese; ½ c. sour cream; ½ c. mayo; ½ tsp. Italian seasoning; 1 tsp. garlic powder; 2 tbsp. Dijon mustard; salt &amp; pepper to taste; 1 ½ c. chopped seeded tomatoes; 1 c. shredded Iceberg lettuce; Toasted bread rounds, crackers, or pita chips