Preheat oven to 350 degrees.
In a medium mixing bowl, whisk together salt, baking powder, baking soda and flour.
Cream together the sugar and butter until light and fluffy.
Add in the vanilla, egg, lemon zest and lemon juice. Mix until well combined.
Add in the flour mixture and combine.
Place powdered sugar in a small mixing bowl. Use a cookie scoop and drop cookies into powder sugar and completely cover.
Place cookie balls onto parchment lined cookie sheets. Gently press down to slightly flatten them.
Bake for about 12 minutes or until they look just done in the center. (Will look a little glossy in center but will continue baking once out of the oven.)
