Prepare 2 baking sheets by lining with parchment paper.
In a medium bowl, whisk together flour, baking soda, salt and lemon zest.
Using a stand-mixer with the paddle attachment, begin creaming the butter and granulated sugar until light and fluffy (approximately 2 - 4 minutes on medium speed). Scrape the bowl as needed.
Add the egg and lemon juice and mix on low speed until incorporated.
Add the flour mixture and mix on low speed until combined.
Gently fold the blueberries into the cookie dough.
Scoop the dough onto the parchment-lined baking sheets using a small cookie scooper (approximately 1 ½ tablespoon per cookie). Leave approximately 2 inches of space between each cookie.
Bake cookies for 10 - 12 minutes or until the tops are a pale golden color.
Let cookies cool on the baking sheets for 5 to 10 minutes, then transfer them to a wire rack to cool completely.