In a medium bowl, whisk together coconut milk, chia seeds, maple syrup or honey, vanilla, and salt until well combined.
Cover and refrigerate for at least 2 hours (or overnight), stirring once after 30 minutes to prevent clumping.
When ready to serve, layer the pudding with diced mango in glasses or bowls.
Garnish with extra mango or a sprinkle of toasted coconut flakes if you’re feeling fancy. Enjoy chilled!