Preheat the oven to 350°F. Generously grease and flour a loaf pan measuring approximately 9.25 x 5.25 x 2.75 inches.
Using the paddle attachment in a stand mixer, cream the softened butter together with the granulated sugar until the mixture becomes light and fluffy. Beat in the eggs one at a time until fully incorporated.
In a separate bowl, mash the bananas using a fork until they resemble chunky applesauce. Stir in the vanilla extract, then add this mixture to the creamed butter and sugar. Mix thoroughly to combine.
Sift together the flour, baking soda, and salt in another bowl. Gradually add the dry ingredients to the wet mixture, blending until just incorporated without overmixing.
Fold in 3/4 cup of the chocolate chips. Pour the batter into the prepared loaf pan and sprinkle the remaining 1/4 cup of chocolate chips evenly on top.
Bake for 55 to 65 minutes, or until a toothpick inserted into the center emerges clean. Allow the loaf to rest in the pan for 10 minutes before transferring it to a wire rack to cool completely.