Preheat oven to 425 degrees F. Line a baking sheet with parchment.
In a mixing bowl, stir together the flour, baking powder, baking soda, salt, sugar, cinnamon and orange zest.
Cut in the butter until the mixture resembles crumbs.
Stir in the chocolate chips.
Whisk the milk and egg together and pour the mixture into the mixing bowl.
Stir until just combined. It helps to use your hands and knead it lightly.
Turn the dough out onto a lightly floured work surface. Pat the dough into and 8-inch circle.
Cut the dough into 8 wedges.
Place the wedges onto the prepared baking sheet. Bake for 12-15 minutes or until golden brown.
TO MAKE THE GLAZE
In a small bowl, whisk together the powdered sugar, orange zest and orange juice until smooth. The glaze should have enough liquid in it to drizzle onto the scones so add a little more orange juice if needed.
Drizzle over the scones.
Notes
TIP: If you have a food processor, place the dry ingredients and orange zest into the base. Pulse a few times. Add the chopped butter and pulse until the mixture resembles coarse crumbs. Turn out onto your floured work surface and continue with the rest of the instructions.