Preheat oven to 450 degrees F. Mix dry ingredients in bowl. Cut butter into dry ingredients until mix resembles cornmeal. Add chocolate chips. Whisk eggs and milk together and stir into dry mixture with a fork. Divide dough into 3 portions - form each portion into 5 inch round and pat down to 1 inch thickness. Cut each round into quarters. Paint each quarter with egg wash. Bake 10 to 15 minutes until firm, but not too dry.