Prepare sausage and vegetables: Preheat the oven to 400 degrees. Place the sausage, onion, peppers, and tomatoes on a large lined baking sheet. Drizzle ½ tablespoon olive oil and vinegar and sprinkle the salt, pepper, and seasoning over the veggies. Toss to coat. Bake in the oven for 25 minutes.
Prepare the rolls: Meanwhile, slice each roll in half and brush the remaining ½ tablespoon of olive oil on the inside of each roll. Once the sausage and veggies reach 25 minutes cooking time, take out of the oven. Place the hoagie rolls, open, on top of the veggies and return the pan to the oven for about 10 minutes until the rolls are toasted and golden brown.
Assemble the hoagies: Place 1 sausage into each roll and top with veggies.
Recipe by Destination Delish at https://www.destinationdelish.com/sheet-pan-sausage-and-pepper-hoagies/