Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Combine the grated parmesan, SPG, and chili powder in a small bowl and set aside.
Cut the baby potatoes into 1-inch slices. Add them to a large bowl and coat them with olive oil.
(Optional) For even more flavor, pan-sear the potatoes for 2–3 minutes per side in a little oil over high heat before roasting.
Transfer potatoes back to the large bowl and toss with the parmesan mixture to coat evenly, or arrange them directly on the baking sheet in a single layer and sprinkle the parmesan mixture over the top of the potatoes. Flip and coat the other side so both sides get covered.
Roast for 10 minutes, then flip the potatoes with a thin metal spatula and roast another 10 minutes, until golden brown and crisp and a fork comes easily from the center of a potato when pierced. Make sure you go by a test other than just timing. Nothing worse than underdone roasted potatoes!
Sprinkle with fresh herbs and serve hot.
Notes
Make-Ahead Instructions: Roast the potatoes, let them cool, and store them in an airtight container. Reheat at 400°F for 10–15 minutes to re-crisp.
Storage Instructions: Store for up to 3–4 days in the fridge. Perfect for meal prep or tossing into salads and grain bowls later in the week.