1. Cut each piece of parchment paper into a 12-in. heart. Brush paper with 1 tablespoon butter. Place a fillet on one side of each heart. Sprinkle with dill, lemon-pepper and garlic powder. Drizzle with remaining butter. Arrange lemon slices over fish.
2. Fold parchment hearts in half. Beginning at the tip of the heart, fold edges together, 2 in. at a time. Place on a large baking sheet.
3. Bake at 375° for 20-25 minutes. With a scissors, cut an X through top of parchment; fish should flake easily with a fork. Transfer each parchment heart to a dinner plate. Garnish with dill sprigs. Yield: 2 servings.