Try this:
1 cup all-purpose flour
1/2 cup dark cocoa
1 teaspoon baking soda
1/2 teaspoon sea salt
3 large overripe bananas (1 ½ cups mashed)
1/4 cup unsalted butter, melted and slightly cooled
1/4 cup canola vegetable oil, or any vegetable oil
3/4 cup packed light brown sugar
1 large egg, at room temperature
1 teaspoon pure vanilla extract
1 cup semisweet chocolate chips, divided

Mix the dry ingredients. In separate bowl, mix the wet ingredients. Then add the dry to the wet ingredients. Put in a prepared loaf pan, and bake in a preheated 350 F degree oven for 50 to 65 minutes until toothpick inserted in the center of the loaf comes out clean.

Good luck, @josiva ! Tell me how it comes out!
!BBH
!LADY
!PIZZA