1. Place roast, onion, banana peppers and roasted red peppers in slow cooker. Cook according to package directions.
2. When meat is tender, discard juices and shred meat. Brush French bread with olive oil and lightly toast under broiler. Place Provolone cheese on the bottom half of each loaf of bread.
3. Top with shredded meat mixture, onions and peppers. Cut each French loaf into sandwich sections and serve.