Make the milk-psyllium mixture by stirring together the psyllium husk and oat milk. Let it sit for 5 to 10 minutes to hydrate.
Sift together all the dry ingredients. Mash the bananas with a fork or potato masher. Stir the milk-psyllium mixture into the mashed bananas, then add everything to the dry ingredients.
Fold the chocolate chips into the batter, then transfer it to a loaf pan. Bake in a preheated 180°C oven for about 40 to 45 minutes.
Brush the freshly baked gluten-free chocolate banana bread with the warm clear fruit glaze, then sprinkle with chocolate chips or cacao nibs, if desired. Skip this step if you prefer.