Cut the banana into thin slices, set aside 3 slices.
Line the bottom of a wine glass with half of the banana slices, crumble 4 amarettini on top. Place half of the chocolate pudding on top. Place the remaining banana slices on top and sprinkle 4 more crumbled amarettini over them. Cover everything with the remaining chocolate pudding and decorate with the 3 banana slices and the 2 amarettini.