Preheat oven to 350. In one bowl, mix the eggs, cooking oil, mashed banana, vanilla, zucchini, and sugar. Let it set until the sugar has partly dissolved (about 15 minutes). Mix in melted chocolate (chocolate will not dissolve completely, giving the bread a slightly marbled look).
In another bowl, combine the flour, salt, baking soda, cinnamon, nutmeg, and nuts.
Sift the dry ingredients slowly into the wet ingredients. Stir until just mixed and pour into loaf pans coated in baking spray. Bake for approximately one hour. Makes two loaves.