Sift together flour, granulated sugar, cocoa powder, baking powder, and salt in a large bowl. Stir in the chocolate chips. Using a fork, mix in the butter until the mixture is crumbly. Gradually add 1 cup of cream until moistened. Knead flour mixture gently, on a lightly floured surface until dough comes together. Divide dough in half. Pat each half into a 1-inch thick circle. Cut the circles into 6 wedges. Place wedges 2 inches apart on the prepared baking sheet.