In a medium mixing bowl, whisk together the nonfat Greek yogurt, lemon juice, lemon zest, and vanilla extract until the mixture is completely smooth and fragrant.
Stir in the pure maple syrup to add a subtle hint of sweetness, ensuring it is fully incorporated into the yogurt base.
In a separate small bowl, gently toss the mixed berries to ensure an even distribution of blueberries, raspberries, or strawberries.
Begin the assembly by spooning half of the zesty yogurt mixture into the bottom of a tall glass or mason jar.
Evenly sprinkle half of the hemp hearts and chia seeds over the yogurt layer, followed by half of the fresh berries.
Repeat the process with the remaining yogurt, seeds, and berries to create beautiful, distinct layers.
Serve immediately while the berries are cold and the seeds provide a satisfyingly crisp texture.