01 - In a medium mixing bowl, whisk together the coconut milk, chia seeds, maple syrup, vanilla extract, key lime zest, and key lime juice until thoroughly combined and no dry pockets remain.
02 - Allow the mixture to rest for 5 minutes, then whisk vigorously a second time to break up any chia seed clumps and ensure even distribution.
03 - Cover the bowl tightly and refrigerate for at least 2 hours or overnight, until the chia seeds have absorbed the liquid and the pudding reaches a thick, creamy consistency.
04 - Remove from the refrigerator and stir the pudding well. Spoon into individual serving glasses or bowls, dividing evenly among 4 portions.
05 - Top each portion with a dollop of coconut yogurt, a sprinkle of crushed graham crackers, and additional lime zest or thin lime slices. Serve chilled.