Prepare grill for indirect-heat cooking. Place each potato on piece of nonstick foil. On an angle, cut 4 slits in each potato, 3/4 of the way through. Mix butter, seasoning, garlic powder and paprika; stir in parmesan. Dividing mixture evenly, spoon over potatoes; wrap in foil. Place on gril over indirect heat. Cover; cook until tender, about 1 hour.
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