Preheat oven 350 degrees. In a Large bowl, combine flour, sugar, salt, cinnamon, baking soda, baking powder, cocoa and chocolate chips. In a medium bowl, whisk eggs slightly. Whisk in oil and vanilla. Stir in zucchini and add mixture to dry ingredients, mixing thoroughly. Pour into 2 lightly greased loaf pans. Bake until toothpick inserted in the center comes out clean, 50 to 55 minutes. Cool in pan on a rack for 30 minutes. Run a knife around the edges and remove bread from pans. Yield: 2 breads.