Heat oven to 375 degrees.
Mix flour, cappuccino, sugar, baking powder, cinnamon and salt in a large bowl; set aside. Stir eggs, coffee, sour cream and melted butter in a small bowl until well blended. Add to flour mixture; stir just until moistened. Stir in chocolate chips. Spoon batter into greased or paper lined muffin pans, filling each cup 2/3 full. Bake 30 minutes or until toothpick inserted in center comes out clean.