In a medium-sized bowl, whisk together almond milk, lemon juice, lemon zest, maple syrup, and vanilla extract until well combined.
Stir in the chia seeds, ensuring they are evenly distributed throughout the liquid.
Cover the bowl and refrigerate it for at least 4 hours, or overnight, to allow the chia seeds to absorb the liquid and form a thick pudding-like consistency.
After refrigeration, give the pudding a good stir to break up any clumps.
Mix in Greek yogurt or coconut cream if you desire a richer texture.
Spoon the pudding into serving dishes and garnish with additional lemon zest or fresh berries if desired.