Preheat oven to 350F and line bread loaf pan (I used 8x4) with non-stick spray and parchment paper.
In a large bowl, whisk together eggs, oil, and maple syrup.
Whisk in pumpkin puree and vanilla. Set aside.
In a smaller bowl, mix together flour, baking soda, baking powder, salt, and pumpkin pie spice.
Add dry ingredients to wet ingredients and stir until combined. Stir in shredded zucchini and mini chocolate chips, saving 1/3 cup for sprinkling on top before baking.
Pour into greased baking dish. Sprinkle with remaining chocolate chips.
Bake for 45-55 minutes or until toothpick inserted in middle comes out clean.