Preheat the oven to 350°F (180°C) and place the rack in the middle of the oven. Grease a muffin pan or line with silicone muffin liners.
In a medium bowl, whisk together the almond flour, baking powder and salt.
In a separate bowl, beat together the coconut oil, coconut sugar, lemon juice, lemon zest, eggs and vanilla extract until well combined.
Add the dry ingredients to the wet mixture and stir until just combined.
Fold in the shredded zucchini and fresh blueberries.
Divide the batter evenly between the muffin cups.
Bake for 20 to 25 minutes or until a toothpick comes out clean. Allow the muffins to cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.