In small bowl, combine egg, egg whites, and milk, whisking thoroughly. In another bowl, combine panko crumbs, pecorino cheese, oregano, and parsley, mixing well. Set both aside.

On cutting board, lay out chicken pieces and amply salt & pepper both sides. Next, dredge chicken pieces in egg mixture, then roll into breadcrumbs, coating well. Place coated chicken into well-greased pan, spacing pieces evenly so they do not touch.

When all chicken has been coated, melt butter on stovetop, then drizzle over meat. Bake at 375F for 45 - 55 minutes until chicken is crispy and brown. Allow to cool, then plate and serve.