Slow Cooker Philly Chicken Cheesesteak

Chicken breast (skinless boneless, 2 large breast)

Italian seasoning (2 tsp)

Garlic powder (1/2 tsp)

Onion (sliced, 1)

Bell peppers (2)

Banana peppers (sliced, 1/2 cup)

Hoagie Rolls (4)

Provolone cheese (4 slices)

Mayo (4 tsp)