Preheat oven to 325°F
Line 2 baking sheets with silpat or parchment paper.
In a large bowl, add the almond flour, sugar, pinch of salt, and lemon zest.
Whisk well.
In a mixer, beat the egg whites until a soft peak forms.
Whisk in the almond extract.
Gently fold the egg whites into the dry ingredients, just until the dough is moist.
The dough will be thick and sticky.
Cover the bowl and chill dough in the fridge for at least 1 hour.
Mix 3 TB coconut and powdered sugar in a small bowl or plate.
When the dough has chilled, remove from the fridge.
Use a spoon to scoop the cookie dough and roll into small balls.
Roll each cookie ball in the sugar mix.
Place cookies on the baking sheets and press slightly on top (with a fork or finger).
Put the baking sheets in the oven and bake for 25 minutes (until the cookies turn golden).
Remove from the oven when done and cool completely on cooling racks.
Enjoy!