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Adjust rack to middle position (top and middle positions for 4 servings) and preheat oven to 400 degrees. Wash and dry all produce.
Peel garlic; place whole clove in the center of a small piece of foil. Drizzle with olive oil and season with salt and pepper. Cinch into a packet.
Halve potatoes lengthwise. Trim and discard woody bottom ends from asparagus. Thinly slice chives.