Preheat oven to 350°F. Grease and flour a 9 x 5-inch loaf pan; set aside.
In a large bowl, whisk flour, cinnamon, baking powder, baking soda, salt, and nutmeg.
In a separate bowl, whisk together the eggs, mashed banana, sugar, oil, and vanilla extract.
Add the wet ingredients to the flour mixture; stir just until moistened. Be careful not to over-mix.
Gently fold in zucchini and pecans.
Transfer the batter into the prepared pan.
Bake for 50-60 minutes, or until a toothpick inserted in the center comes out clean. Do not overbake.
Remove from the oven, unmold from the pan, and cool completely on a wire rack before slicing and serving.