Beat the eggs and (separately) mash the bananas, then place to the side.
In a large bowl, combine the flour, chili powder, cayenne, baking soda, salt, nutmeg, and cinnamon.
In a separate glass bowl, slightly melt the butter (until mixable), then mix in the brown sugar. Stir until combined, then layer in the banana mash and eggs.
Pour the banana mash mix into the chili-flour mix and stir to combine into the batter.
Grease a loaf pan, then pour the batter into it. Bake for 1 hour.
Remove the banana bread from the oven and allow it to cool for 15 to 30 minutes prior to removing.
Serve warm or refrigerate to keep.
Video
Notes
For a nut bread, add in 1/2 cup crushed walnuts to the chili-flour mix.