Preheat your oven to 350°F.
Prepare your loaf pan by buttering and flouring.
Grab a small or medium bowl and dump the flour, baking soda, baking powder and salt in there and mix it up well with a whisk.
In the bowl of your stand mixer, cream the butter or coconut oil and sugar until light and fluffy.
Put those 3 bananas in the bowl and beat them until they are mashed bananas.
Add the eggs one at a time and beat well after each.
Now pour in the vanilla extract and the sourdough discard. Mix those briefly, just until they are combined.
Add the flour mixture a 1/2 cup at a time and mix just until combined.
And then you need to toss in the pecans and chocolate chips and mix then real quick in the mixer, or stir/fold them in with a spoon.
Pour the sourdough banana nut bread batter into the prepared loaf pan and pop it in the preheated oven.
You need to bake this amazing bread for 60 to 75 minutes, or until a cake tester or toothpick comes out clean.
When it's done, turn out onto a cooling rack and allow to cool completely before slicing.