Preheat the oven to 350°F and prepare a muffin pan with cupcake liners.
In a large bowl, whisk together the flour, cocoa powder, baking soda, and salt.
In a separate small bowl, whisk together the maple syrup, melted butter, sour cream, eggs, and vanilla bean paste.
Gently stir the wet ingredients into the dry ingredients until just combined. Do not overmix.
Squeeze any excess liquid from the zucchini, then gently fold it into the batter.
Fold in the chocolate chips.
Divide the batter evenly among the prepared cupcake liners. Tulip liners can be used for a bakery-style look.
Bake for 20 minutes, or until a toothpick inserted into the center comes out clean.