Preheat your oven to 350°F (175°C). Lightly grease or line a loaf pan with parchment paper.
Prep the zucchini: Grate and squeeze out excess moisture using a clean kitchen towel.
Mix wet ingredients: In a large bowl, whisk together eggs, oil, vanilla, and both sugars until smooth.
Add fruits & veggies: Fold in the grated zucchini and chopped peaches.
Combine dry ingredients: In a separate bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, and nutmeg.
Mix it all: Gradually add dry ingredients to wet ingredients, mixing until just combined.
Pour into loaf pan and spread evenly.
Bake for 50–55 minutes or until a toothpick inserted into the center comes out clean.
Cool in pan for 10 minutes, then transfer to a wire rack to cool completely.
Slice, serve, and enjoy the flavor of summer!