Preheat your oven to 350°F (175°C) and grease a loaf pan.

In a bowl, whisk together flour, cocoa powder, baking powder, cinnamon, nutmeg, granulated sugar, and brown sugar.

In another bowl, mix eggs, vegetable oil, and pumpkin puree until smooth.

Gently combine the wet and dry ingredients until just mixed.

Divide the batter in half; spoon each into the prepared pan alternately to create swirls.

Bake for 50-60 minutes or until a toothpick inserted comes out clean.