Cut 2 (15 x 24-inch) pieces of parchment paper. Fold in half crosswise. Draw a large heart half on each piece, with the fold of the paper along the center of the heart. Cut out the heart, and open. Sprinkle both sides of fillets with salt and pepper. Place one fillet near fold of each parchment heart. Top each fillet with half the vegetables and half the oil mixture. Start at the top of the heart and fold edges of parchment, sealing edges with narrow folds. Twist the end tip to secure tightly.