Combine the flour, sugar, baking powder, baking soda, salt, pumpkin spice mix and chocolate chips in a big bowl and stir.
Combine the mashed bananas, eggs, melted butter and pumpkin purée in another bowl and mix well.
Then fold the wet ingredients into the dry ingredients until just combined (do not overmix or your bread will come out rubbery and tough).
Pour the batter into a pan coated with flour or lined with baking paper.
Bake in a pre-heated oven at 180°C – 355°F for about 1 hour and 15 minutes or until the bread is golden brown and a toothpick inserted in the center comes out clean. When ready, let it cool a bit in the pan and then place it on a wire rack to cool completely before slicing it.