Wash and scrub the potatoes well. Don’t peel the skin. Then slice lengthwise and score each half.
In a small bowl, combine olive oil, butter, garlic powder, dried parsley, smoked paprika, Italian seasoning, sea salt and crushed red pepper.
Transfer the potatoes to a large bowl and pour the garlic butter marinade on top. Toss well till each potato is fully coated.
Line a baking tray with parchment paper and lightly grease it. Generously sprinkle grated Parmesan over the surface.
Press the bottom side of each potato in the remaining Parmesan cheese and lay it down, skin side up, on the baking tray. Repeat for all the potatoes. Make sure you don’t overcrowd the baking pan. Brush with some leftover garlic butter.
Bake in the middle rack at 220 °C (430 °F) for 25-30 minutes. Baking time can vary depending on the size of the potatoes so do keep an eye. Cook till the potatoes are soft inside and the cheese has formed a crust.
Remove the tray from the oven and let rest for 4-5 mins. Then turn over all the potatoes, sprinkle with fresh parsley or chives, and some more sea salt if you wish.