Melt butter in 13 x 9-inch pan in 400°F. oven, about 3 minutes. Remove pan from oven. Meanwhile, combine Panko and cheese in large plastic food storage bag. Beat egg with soy sauce in shallow dish until well blended. Dip chicken pieces, one at a time, into egg mixture; then add to bag of bread crumbs mixture. Close top and shake bag to coat both sides. Place chicken, skin side down, in prepared baking pan, leaving space between pieces. Bake chicken 20 minutes. Turn pieces over and bake 20 to 25 minutes longer, or until chicken is no longer pink near bone and is golden brown. Garnish with grated Parmesan.