Preheat oven to 425F with the top rack positioned in the middle of the oven.
Wash, towel dry, and cut the potatoes in half lengthwise. See notes for roasting whole.
Season:
In a large bowl, combine the olive oil, garlic powder, paprika, Italian seasoning, salt, and black pepper.
Add the fingerling potatoes to the bowl and toss to coat all of them generously with the seasoning.
Roast:
Spread potatoes out on a baking sheet and turn the potatoes so the cut side is down (rounded skin-side up).
BAKE the potatoes for 25 minutes, a little longer if needed depending on the size, until they're fork-tender. To crisp the skins, finish them on BROIL for 2 minutes. Remove them from the oven.
Notes
Roasting your potatoes whole will add 7 to 10 minutes to the total baking time.
You can swap the olive oil for melted butter, same amount, for a garlic-butter flavor.
Using dried seasonings (like garlic powder and Italian seasoning) prevents fresh herbs and garlic cloves from burning at this roasting temperature.