Cut roast in half; place in slow cooker. Sprinkle with Italian seasoning and pepper. Add water, garlic, and fresh onion. Cover and cook on high 4 hours or until meat is tender.
Remove roast; shred meat with two forks and return to slow cooker. In a small bowl, combine the dried onion, bouillon, garlic powder, salt and Worcestershire sauce; pour over meat and stir. Cover and cook on low 30 min. or until meat is saturated with juices.
Cut each loaf of bread into six sandwiches; spread meat mixture on top. If desired, add a slice of provolone to each sandwich. Makes 12 sandwiches.