Peel the pumpkin, removing seeds and inner fibers. Cut into small pieces, place on a baking sheet, and bake at 180°C (350°F) for 15-20 minutes or until very soft. Let it cool slightly, then blend with cinnamon and oil until smooth.
In a mixing bowl, beat the sugars with eggs and a pinch of salt until well combined. Add the pumpkin puree and mix thoroughly. Sift in the baking powder and flour, stirring to create a smooth batter. Fold in the chocolate chips.
Line a loaf pan with parchment paper, pour in the batter, and smooth the top. Sprinkle extra chocolate chips on top if desired. Bake in a preheated oven at 180°C (350°F) for about 40 minutes, or until a toothpick inserted into the center comes out clean.
Remove from the oven, let cool, then slice and enjoy your pumpkin bread.