Heat oven to 350 degrees. Prepare two 9x5-inch loaf pans by spraying with cooking spray. Set aside.
n a large bowl, combine the flour, sugar, baking soda, salt, cinnamon, nutmeg, and pumpkin pie spice. Stir with a wire whisk to break up clumps.
In another bowl, combine the pumpkin, eggs, oil, water and peanut butter and stir together with a wire whisk.
Stir the wet ingredients into the dry ingredients and stir together just until moistened. Stir in the chocolate chips.
Divide batter evenly between the two loaf pans. Smooth out the top and if wanted sprinkle some additional milk chocolate chips on top and gently press them down.
Cook for 55-70 minutes or until toothpick inserted into center comes out with moist crumbs.
Leave the bread in the pan for about 30 minutes and then turn out onto a cooling rack to cool completely. Let loaf cool completely before cutting, otherwise it will be crumble and not cut cleanly.