Preheat oven to 400℉. Then, melt the butter in a small sauté pan over medium-low heat. When the butter is melted, add the garlic, chives, black pepper, salt, and Parmesan cheese. Stir to mix well.
Toss the potatoes in butter mixture. Stir to coat and transfer potatoes to an oven-safe baking dish. Cover with aluminum foil and roast for 45 minutes.
Test with a fork or knife to confirm the potatoes are tender. If still firm, roast for an additioinal 5-10 minutes or until they are done.
Remove from the oven. Spoon potatoes with excess butter mixture from bottom of baking dish. Sprinkle with additional chives and Parmesan cheese if desired and serve immediately.