Preheat the oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line it with parchment paper, leaving some overhang for easy removal.
Combine the Wet Ingredients: In a large bowl, whisk together the pumpkin puree, eggs, vegetable oil, vanilla extract, granulated sugar, and brown sugar until smooth and well combined.
Mix the Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking soda, baking powder, pumpkin pie spice, and salt until evenly combined.
Combine Wet and Dry Mixtures: Gradually add the dry ingredients to the wet mixture. Stir gently with a spatula just until combined. Do not overmix.
Fold in the Chocolate Chips: Gently fold the chocolate chips into the batter, reserving a small handful for the top.
Fill the Loaf Pan: Pour the batter into the prepared loaf pan and smooth the top. Sprinkle the reserved chocolate chips evenly over the surface.
Bake for 60–65 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Avoid overbaking.
Cool and Slice: Let the bread cool in the pan for 10–15 minutes, then transfer it to a wire rack. Allow it to cool completely before slicing.