Add the first 7 ingredients (almond milk through sea salt) to a blender and blend until combined. Pour this mixture into a large jar. Add the chia seeds, seal the jar tightly, and shake well. Place jar in the refrigerator for at least 4 hours, preferably overnight. If you're able to stir the chia seed pudding periodically, it will turn out best when it's been stirred a few times throughout the sitting process.
Add the mashed bananas to the jar with the chia pudding and stir well (note: if your jar isn't large enough, you can transfer everything to a mixing bowl). Taste the chia pudding for flavor and add more cinnamon and/or pure maple syrup to taste.
Serve banana bread chia pudding with sliced bananas, walnuts, hemp seeds, and unsweetened flaked coconut.