Preheat oven to 350°F.
In a medium bowl, mash bananas well. Add in egg and whisk together. Mix in butter, vanilla, pumpkin and brown sugar until smooth.
In a separate bowl, whisk together flour, salt, baking soda and baking powder. Pour the dry ingredients into the wet and stir.
Fold in 2/3 c chocolate chips.
Pour batter into a well greased bread pan and top with chocolate chips.
Bake for 45-55 minutes or until a toothpick comes out clean. Allow to cool before serving.