Heat oven to 350°F. Spray a loaf pan with oil or line with parchment.
In a large bowl, whisk together bananas, eggs, brown sugar, tahini, oil, and vanilla until completely combined.
Add remaining ingredients except for chocolate chips and stir into the batter until just combined.
Gently fold in chocolate chips.
Pour the batter into prepared loaf pan. Sprinkle with chocolate chips and sesame seeds (optional). Bake 45-50 minutes, or until a toothpick inserted into the center comes out clean.
Remove from the oven and let cool at least 10 minutes before removing from the pan.