Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a medium bowl, whisk together the flour, baking soda, cinnamon, ginger, nutmeg, and salt. Set aside.
In a large mixing bowl, cream the softened butter and brown sugar together until light and fluffy, about 3-4 minutes.
Add the egg, vanilla extract, and molasses to the butter mixture, mixing until well combined.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Fold in the chocolate chips and chopped crystallized ginger until evenly distributed.
Scoop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart.
Bake for 10-12 minutes, or until the edges are lightly golden. Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.