01 - In a medium mixing bowl, whisk together the coconut milk, chia seeds, maple syrup, vanilla extract, key lime zest, and fresh key lime juice until thoroughly combined and smooth.
02 - Allow the mixture to rest for 5 minutes, then whisk again vigorously to break up any chia seed clumps and ensure even distribution throughout the liquid.
03 - Cover the bowl tightly and refrigerate for at least 2 hours or overnight, allowing the chia seeds to absorb the liquid and the pudding to thicken into a creamy, custard-like consistency.
04 - Remove from the refrigerator and stir the pudding well to loosen the texture. Spoon evenly into four individual serving glasses or bowls.
05 - Top each portion with a dollop of coconut yogurt, a sprinkle of crushed graham crackers, and extra lime zest or thin lime slices as desired. Serve chilled.