Preheat the oven to 350 degrees F (175 degrees C). Lightly grease a 9x5 inch loaf pan.
Sift flour, baking soda, baking powder, salt, and cinnamon together in a medium bowl. Set aside.
Beat sugar and eggs together in a large bowl until light and fluffy, about 10 minutes. Gradually add oil; beat 2 minutes more. Mix in zucchini, pecans, and lemon extract. Fold in flour mixture until just combined; do not overmix. Pour batter into the prepared pan.
Bake in the preheated oven until a toothpick inserted into center comes out clean, about 1 hour.
Easy Pecan Zucchini Bread · Dinner Match Lab | Dinner Match Lab