To make these potatoes, start by preheating your oven to 425 F.
Next, wash and scrub the potatoes and cut them in half. If you're using larger sized sweet potatoes, you may want to cut them into chunks.
Transfer the cut potatoes to a large bowl and add in the olive oil, Italian seasoning, garlic powder, sea salt, and black pepper. Toss until the potatoes are fully coated in the oil and seasonings.
Next, grate the parmigiano reggiano into a bowl.
Line a baking sheet with parchment paper and spread the cheese out in an even layer across it.
Then, transfer the potatoes to the baking sheet and place them cut-side down, pressing them into the cheese. Repeat until all of the potatoes are lined up on the sheet.
Finally, bake the potatoes for 25-26 minutes.
Once they're done, remove them from the oven and allow the potatoes to rest for 10 minutes, until the cheese hardens.
Then, use a spatula to remove the potatoes from the pan.
Garnish with fresh chop chives, if desired, then serve and enjoy!