In a medium mixing bowl, stir together the flour, baking powder and salt. Set aside.
In a large mixing bowl using a stand mixer or electric hand mixer, beat the butter and sugar at medium speed until well combined.
Beat in the lemon zest, lemon extract, and egg until incorporated.
Gradually add in the flour mixture on low speed. Beat just until combined.
Cover the bowl and chill for 1 hour. You can make and refrigerate it for up to 3 days in advance. If chilling longer than an hour, you'll need to let it sit at room temp until soft enough to handle. You can also freeze it and use it within 3 months. Then thaw overnight in the freeze.
Preheat the oven to 350 °F (175 °C). Grease a 12” (30.5 cm) pizza pan (don't use one with holes). If you don’t have one, you can use a piece of parchment paper on a baking tray.
Press the chilled dough into the prepared pan to form a 10” (25.4 cm) circle.
Bake for 15-18 minutes or until the crust has lightly browned.
Remove to a wire rack to cool completely - about 1 hour.