Preheat oven to 375 degrees.
Mix together flour, cocoa powder, baking soda and baking powder and set aside.
Mash avocado in a large bowl, then mix in olive oil, egg, honey, almond milk, melted chocolate and vanilla.
Fold flour mixture into wet ingredients, adding just a bit of it at a time, stirring well with a spatula. Add grated zucchini, pumpkin seeds and hemp hearts to batter, stirring well to combine.
Add muffins to muffin trays lined with cupcake liners, then bake muffins for 20 minutes in the oven, until tops are cracked and batter barely sticks to a toothpick (there will be a tiny amount of residue but not much).
IMPORTANT: Store muffins in a sealed container in the fridge after they have been left to cool for at least an hour. Muffins will last up to 7 days. Enjoy!