Preheat oven to 350° F. Prepare a muffin tin by lining with cupcake liners or lightly greasing with oil or butter.
In a large bowl, combine flour, almond meal, poppyseeds, salt, baking powder, and baking soda. Stir to combine.
In a medium bowl, combine oil, sugar, maple syrup, egg, vanilla, lemon juice, and lemon zest. Whisk until combined.
Add the wet ingredients to the dry, and stir with a spatula until the dry spots are mostly gone. Then add the shredded zucchini, and fold until incorporated. The batter will be pretty thick.
Divide the batter amongst the 12 cups, filling each cup about 2/3 of the way full.
Bake for 20 minutes, or until a toothpick inserted into the middle of a muffin comes out clean.
Let cool about 10 minutes in the tray, then carefully remove and finish cooling on a cooling rack.