Move your oven rack to the upper ⅓ of the oven. Preheat the oven to 450 degrees and line a large baking sheet with parchment paper.
Finely grate parmesan cheese.
Rinse squash, cut off stems and ends, then cut into rounds approximately ½ inch thick. Place the squash in a large bowl.
Drizzle the squash with olive oil and mix it around with your hands, making sure all of the squash are coated well with oil. Then sprinkle approximately 1 tablespoon of the seasoning, salt to taste and about ¼ cup of the parmesan cheese onto the squash and mix again to coat evenly.
Lay the squash out in a single layer on the baking sheet leaving as much space between the pieces as possible. Sprinkle with remaining cheese and additional Garlic Pepper Seasoning if you wish.
Roast in the oven for approximately 13-15 minutes, until the tops are lightly browned. Remove from the oven and enjoy!