Whisk together the flour, salt, and baking soda in a medium bowl. Set aside.
Put the sugars and the orange zest in the bowl of a stand mixer. Using your fingers, rub the zest into the sugars until fragrant.
Add the butter to the sugar mixture, and beat at high speed until the mixture turns light and fluffy. Then beat in the egg, followed by the vanilla and orange extracts. At low speed, beat in the flour until it disappears into the wet ingredients.
Using a spatula, fold the chocolate into the cookie dough.
Use a cookie scoop or your hands to form 1-inch diameter balls of dough. Space the dough balls about 2 inches apart on a parchment-lined baking sheet. Use your fingers to slightly flatten the balls. Chill in the refrigerator or freezer while you preheat the oven to 350°F or 180°C.
Bake until the cookies turn golden -- 12 minutes for soft cookies, and 15 minutes for crisp. Cool on the baking sheet for 10 minutes, and then transfer to a wire rack to cool completely. Enjoy!