Beat together butter and both sugars in a medium mixing bowl until smooth and creamy. Beat in honey and then the egg. Mix in salt, baking soda and baking powder so it is evenly blended and then stir in cocoa powder until combined. Add flour and fold it in until blended before folding through the chocolate chips.
Cover the dough and chill for 1-2 hours.
Preheat your oven to 350°F. Line two baking sheets with parchment paper.
Roll heaped tablespoons of dough into balls and place onto prepared baking sheets, spacing them 2 inches apart. Flatten them down slightly using your fingertips and place a few bittersweet chunks on top. Bake until slightly cracked at the surface, about 9-10 minutes. Let them set for a minute on the trays before transferring to a wire rack to finish cooling.