Preheat your oven to 350°F (175°C). Grease and flour an 8×8 inch baking pan or line it with parchment paper.

Grate the zucchini and squeeze out excess moisture.

In a bowl, whisk together flour, cocoa powder, baking soda, and sugar until combined.

In another bowl, mix eggs, vegetable oil, and vanilla extract until smooth. Add this mixture to the dry ingredients along with the grated zucchini.

Fold in chocolate chips gently until evenly distributed.

Pour the batter into the prepared pan and spread evenly.

Bake for 30–35 minutes or until a toothpick comes out clean. Cool in the pan before slicing.