Beat eggs until light and fluffy. Add oil, sugar, cinnamon and vanilla. Stir in zucchini. Sift dry ingredients together and add to egg mixture. Mix well and add chocolate chips. Pour into 2 greased and floured loaf pans. Bake 350 degrees 1 hour. Cool and remove from pans.
Note: For chocolate bread, substitute 1/2 cup flour for 1/2 cup baking cocoa.