In a mixing bowl combine flour, cinnamon, baking soda, salt, baking powder, and nutmeg
In another bowl combine sugar, shredded zucchini, cooking oil, egg and lemon peel; mix well
Add flour mixture to zucchini mixture, stirring just until combined
Stir in chopped walnuts
Pour batter into a greased 8x4x2-inch loaf pan
Bake in a 350° oven for 55 to 60 minutes or until a toothpick inserted near the center comes out clean
Cool for 10 minutes on a wire rack
Remove bread from the pan; cool thoroughly on a wire rack
Wrap and store overnight before slicing
Makes 1 loaf (16 servings)