Place the mango chunks, ice cubes, honey (if using), chili powder, and lime juice into the blender basket for a vibrant mix of flavors and textures.
Secure the lid firmly and blend on high speed until the mixture is smooth, thick, and icy, with no visible chunks.
Stop the blender occasionally to scrape down the sides with a spatula, ensuring everything blends evenly and achieving an ultra-smooth consistency.
Taste the slushie and add more lime juice or honey if desired, then blend briefly to incorporate the flavors.
Pour the chilled mango slushie into glasses, allowing the icy texture to spill over the edges for a refreshing presentation.
Garnish with a small wedge of lime or a pinch of chili powder on top for an extra burst of flavor and visual appeal.