If you're lucky enough to have leftovers, wrap hoagies in foil, and reheat in a 350° oven for 15 minutes.
Preheat oven to 375°. Toss together first 6 ingredients in a large bowl; spread mixture in an even layer in a lightly greased (with cooking spray) heavy-duty aluminum foil-lined sheet pan.
Pierce each sausage 6 times with a wooden pick. Place sausages 3 to 4 inches apart on pepper mixture.
Bake at 375° for 40 minutes; increase oven temperature to broil. Broil 6 to 8 minutes or until browned, turning sausages halfway through.
Place 1 sausage in each roll, and top with desired amount of pepper mixture.