Rub the rim of a rock glass with a lime wedge, dip the rim in tajin powder to coat, and set aside.
Add mezcal, poblano pepper infusion, ancho pepper infusion, lime juice, pineapple juice and agave syrup into a shaker, plus ice, and shake until well-chilled.
Strain into the prepared glass over fresh ice.
Garnish with a dehydrated jalapeño or lime. Enjoy!