Preheat oven to 350 degrees and line a baking sheet with parchment paper.
Cream together the butter and sugar until light and fluffy. Add the egg and vanilla and continue mixing until well incorporated.
Add the flour, baking powder, baking soda, salt and cinnamon to the wet ingredients and mix until just combined.
Fold in the grated zucchini and chocolate chips. Scoop large spoonfuls of batter onto prepared baking sheet two inches apart. Bake for 18 minutes or until golden.