Preheat the oven to 350°. Coat a 9-by-5-inch loaf pan with vegetable spray. In a small bowl, whisk together the flour, baking soda, baking powder, salt, nutmeg and cardamom. In a medium bowl, whisk the eggs with the sugar, oil, zucchini and vanilla. Add the flour mixture and stir gently with a spatula until the flour is just incorporated. Stir in the sour cream followed by the chocolate chips.