01 -  Preheat oven to 425°F. Line a baking sheet with parchment paper or lightly grease with olive oil. 
 02 -  In a large mixing bowl, toss potato rounds with olive oil, minced garlic, rosemary, sea salt, and black pepper until each piece is thoroughly coated. 
 03 -  Lay seasoned potato rounds in a single layer on the prepared baking sheet. 
 04 -  Bake for 15 minutes, then turn each round with a spatula. Continue roasting for an additional 12 to 15 minutes, until edges are crisp and golden brown. 
 05 -  If using, sprinkle grated Parmesan cheese over potato rounds during the last 2 minutes of baking. 
 06 -  Remove potatoes from oven. Garnish with chopped fresh parsley if desired and serve hot.