Chocolate Orange Scones

2 cups flour
1/4 cup powdered (confectioner's) sugar
1 Tablespoon baking powder
7 Tablespoons cold butter, cut up in 1-inch bits
1 egg
1/2 cup milk
8 ounces (1 cup) good quality dark chocolate chips
2 teaspoons grated fresh orange zest (or 2 teaspoons dried orange peel)
1 Tablespoon granulated sugar for dusting

Preheat oven to 425 degrees. Dust a cookie sheet or jellyroll pan lightly with flour, set aside.
In a large bowl, mix flour, powdered sugar (or 2 tablespoons granulated sugar), and baking powder together. Drop in the cut-up butter, and using two knives, cut together with the flour to make pea-sized crumbs.
Mix egg and milk together using a fork, and stir into the flour/butter mixture, also adding the chocolate chips and the orange zest at this point. Stir and mix together.
Shape dough into a ball, and pat out on pastry board or cloth dusted with flour, turning a few times. You will want the mixture to hold together, but do not handle too much. Reshape into ball.
Place ball onto cookie sheet and pat out into 8-inch circle. Dust with remaining sugar. Cut into wedges, and bake for 12-15 minutes. Remove from pan and serve warm, not hot.