Heat oven to 350 degrees. Spray a loaf pan with cooking spray and line with parchment paper. Set aside.
To a large bowl, add butter and sugar. Using a wooden spoon, mix the two together until well blended. Add in eggs, mashed bananas, and vanilla and stir until blended.
To a medium bowl, whisk together flour, baking soda, and salt. Add the dry ingredients to the wet ingredients and gently blend until just incorporated. Fold in 2/3 cup of chocolate chips and 1 cup of pecans. Pour batter into the prepared loaf pan and sprinkle remaining chocolate chips on top of batter. Bake for 50 to 55 minutes until golden brown on top and a toothpick inserted into the center comes out clean.
Remove loaf pan from the oven and let sit for 15 minutes, then turn out on a wire rack to cool. Slice and serve warm or at room temperature.