Place the pineapple chunks, ice cubes, chili powder, and honey into a blender.
Blend on high speed until the mixture is smooth and evenly combined, with a slightly thick and icy texture.
Stop the blender and check the consistency; add more ice if a thicker, frostier slush is desired and blend again briefly.
Pour the vibrant green-yellow mixture into chilled glasses, allowing the icy slush to mound slightly above the rim.
Garnish with small slices of jalapeƱo or a sprinkle of chili powder on top for extra spice and visual appeal.
Serve immediately with a straw, enjoying the refreshing and spicy flavor combination.