In a mixing bowl combine flour, cinnamon, baking soda, salt, baking powder and nutmeg
In another mixing bowl combine sugar, shredded zucchini, cooking oil, egg and lemon peel. Mix well.
Add flour mixture to wet ingredients and stir until just combined. Stir in nuts.
Pour into a greased loaf pan. Bake at 350° for 55 to 60 minutes. Bread is done when a toothpick inserted near the center comes out clean. Cool 10 minutes on a wire rack.
Remove bread from pan. Cool completely and then wrap and store overnight before slicing.