Add the almond milk to a high-speed blender first, followed by the spinach, kale, banana, chia seeds, and honey. Adding the liquid first helps everything blend more smoothly.
Blend on high speed until the smoothie is completely smooth and creamy, stopping to scrape down the sides of the blender if needed.
If the smoothie is too thick, add an extra splash of almond milk and blend again until it reaches your desired consistency.
Pour into a glass and enjoy immediately for the best flavor and texture.