In a small bowl, whisk together the flour, baking soda, and salt.
In the bowl of a stand mixer fitted with the paddle attachment (or in a large bowl, using a hand mixer), cream the butter, freeze-dried strawberry powder, brown sugar, and white sugar on medium speed until the mixture is light and fluffy, about 3 minutes. Scrape down the sides of the bowl a few times during mixing to make sure the strawberries don't clump up.
Add the egg, egg yolk, and vanilla extract and mix on medium speed until the eggs have been absorbed.
Add the flour mixture and mix on low until just blended.
Scrape down the sides of the bowl and mix in the chocolate chips on low speed until they are evenly distributed.
Transfer the dough to the refrigerator in a covered container for at least 8 hours or up to 48 hours.
When you're ready to bake, heat the oven to 350˚F (180˚C). Line two baking sheets with parchment paper.
Scoop or roll the dough into 1 1/2-inch (4 centimeter) balls, about 1 ounce (28 grams) each, and leave 2 inches (5 centimeters) between cookies on the baking sheets to allow for spread.
Bake them for 12 to 15 minutes, rotating the pans top to bottom and front to back once. Cookies should be light golden brown on the sides and crackly on top. If you touch the center of the cookie lightly, you should not be able to leave an imprint.
Let the cookies rest for 2 minutes on the baking sheets, then transfer them to a wire rack to cool.