Chocolate Orange Loaf Cake

Mix Dry Ingredients:

In a bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt.
Combine Wet Ingredients:

In a separate bowl, mix the sugar and vegetable oil. Add the eggs one at a time, mixing well after each addition. Then stir in the vanilla extract, orange zest, orange juice, and buttermilk.
Combine Mixtures:

Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the chocolate chips.
Bake the Cake:

Pour the batter into the prepared loaf pan and bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.