01 - Preheat oven to 425°F and line a large baking sheet with parchment paper.
02 - Place the sweet potato rounds in a single layer on the prepared baking sheet.
03 - Drizzle with olive oil and sprinkle with sea salt, black pepper, and cinnamon if using. Toss until evenly coated, then spread back into a single layer.
04 - Roast in the oven for 25 to 30 minutes, flipping halfway through, until the medallions are golden and fork-tender.
05 - Remove from the oven and immediately drizzle honey evenly over the warm sweet potatoes. Allow to rest for 2 to 3 minutes so the honey absorbs into the medallions.
06 - Transfer to a serving platter, garnish with fresh parsley if desired, and serve warm.