Beat 1 egg. Add the other wet ingredients including the milk, oil, and pumpkin purée, and mix together. Add the dry ingredients including the flour, sugar, salt, pumpkin pie spice, and chocolate chips, then gently mix. Batter should be lumpy.
Put in a bread loaf pan. Top with brown sugar and sea salt.
Bake at 400°F for 60 minutes, or until a toothpick comes out clean. The final loaf should be soft and fluffy like a muffin.