Place the chile powder on a plate, moisten the rim of the glass with a lime wedge and dip the rim of the glass in the chile powder. Using a knife cut along the stick of the mango chamoy popsicle to remove the popsicle stick. Transfer paletas to a small bowl.
In a blender puree the mango, lime juice, tequila, and chopped mango chamoy popsicles until smooth. Add two teaspoons of chamoy to the bottom of each glass, add enough margarita to fill the glass halfway.
Add 2 more teaspoons of chamoy and fill the glass ¾ of the way with margarita.As a garnish add a mini lime paleta to each glass and serve immediately.