Roll the pastry out into a 12 by 18-inch rectangle. Slide onto a pan and refrigerate for about 1 hour, until the dough is firm and rested. Use a floured, round, 21/2-inch cutter to cut out the dough. Arrange the cut dough on the prepared pans, about 1- inch apart. In a bowl, stir together the cheese, ham, parsley and pepper. Brush the egg wash lightly on the dough and arrange the filling over half of each circle of dough. Fold the empty side of the dough over the filling and seal the edges well with your fingertips. Seal again by pressing around the rim with the back of the tines of a fork. Dip the fork in flour so it doesn't stick. Arrange the turnovers about 1-inch apart on the prepared. Refrigerate the turnovers loosely covered with plastic wrap until 30 minutes before serving. Set a rack in the upper third of the oven and preheat to 375 degrees. Egg-wash the tops of the turnovers and bake for about 20 minutes, until they're well colored and crisp. Cool the pastries on the pans and reheat to serve. Serving: Reheat the turnovers at 350 degrees at 350 degrees for about 10 minutes to serve them warm. Storage: Refrigerate or freeze leftovers and reheat before serving.