Melt 8 oz of the chocolate as directed on package, set aside. Coarsely chop remaining chocolate. Mix flour, cinnamon, pepper, powder, and salt in small bowl.

Beat butter and sugars in large bowl with mixer on medium speed until light and fluffy. Add eggs and vanilla, mix well. Add melted chocolate, beat until well blended. Gradually beat in flour mixture on low speed until well mixed. Stir in chopped chocolate. Drop dough by rounded tablespoons on parchment paper lined baking sheet.

Bake in preheated 375° oven about 10 minutes or until cookies are set and slightly cracked on top.