Preheat oven to 325 degrees and grease or line muffin tin.
Grate the zucchini, squeeze out the liquid and let it drain while you make the batter.
Combine the almond flour, coconut flour, baking soda and salt in large bowl. Whisk together the eggs, coconut sugar, lemon juice and ghee in medium bowl, then stir in grated zucchini.
Stir the wet ingredients into the dry ingredients. Then fold in chocolate chips and walnuts.
Using a large ice cream or cookie scoop, fill the muffin cups ¾ full.
Bake for 20 - 25 minutes, until golden brown and toothpick inserted in center comes out clean. Cool on a wire rack.