Mash the banana: In a medium bowl, mash the ripe banana until mostly smooth with a few small lumps.
Add wet ingredients: Whisk in the egg, peanut butter, vanilla, milk, and maple syrup or honey (if using) until well combined.
Mix dry ingredients: In the same bowl, sprinkle in the flour, baking powder, baking soda, and salt. Stir gently until just combined.
Do not overmix.
Fold in chips: Gently fold in the chocolate chips. If the batter seems too thick, add a splash more milk; it should be pourable but not runny.
Heat the pan: Warm a nonstick skillet or griddle over medium heat. Lightly grease with butter or oil.
Cook the pancakes: Pour 1/4 cup batter per pancake.
Cook 2–3 minutes until bubbles form and edges look set. Flip and cook 1–2 minutes more until golden and cooked through.
Serve warm: Top with banana slices, a small drizzle of peanut butter, or yogurt. Add a light pour of maple syrup if you like.