Add the frozen pineapple chunks, coconut milk, and lime zest into your blender.
Pour in the honey or simple syrup if you prefer a sweeter slushie.
Secure the lid on the blender and blend on high speed until the mixture is smooth and creamy, with no visible chunks.
Stop the blender and check the texture; if it’s too thick, add a splash more coconut milk and blend briefly again.
Pour the slushie into glasses and garnish with a small slice of pineapple or a sprig of mint if desired.
Serve immediately with a straw, enjoying the icy, tropical refreshment.