Preheat your oven to 180°C (350°F) and line a loaf tin with parchment paper.
Grate the zucchinis, sprinkle with salt, and let them sit for 10 minutes.
Squeeze out as much liquid as you can using a clean towel or your hands.
In a large bowl, whisk the eggs, then add olive oil and milk.
Stir in the cheese and the drained zucchini.
Add the flour, baking powder, baking soda, garlic powder, and black pepper.
Mix everything just until combined—don’t overdo it.
Pour the batter into the prepared tin and level it out.
Bake for 50–55 minutes or until golden brown and a toothpick comes out clean.
Let it cool in the tin for 10 minutes, then transfer to a wire rack.