Preheat oven to 350°F (175°C) and line two baking sheets with parchment paper.

In a bowl, whisk together flour, baking powder, and salt; set aside.

In another bowl, cream the softened butter and granulated sugar until light and fluffy.

Add the egg and orange zest to the butter mixture, mixing until well combined.

Gradually mix the dry ingredients into the wet mixture until a soft dough forms.

Scoop tablespoon-sized portions onto prepared baking sheets, spacing them two inches apart.

Bake for 10-12 minutes or until edges are lightly golden. Allow to cool on wire racks.

To make the glaze, combine powdered sugar and fresh orange juice in a small bowl; drizzle over cooled cookies.