How to Make It
Preheat oven to 425°F. Combine chile powder, cumin, and 1 teaspoon of the salt; rub all over pork. Heat 2 tablespoons of the oil in a large cast-iron skillet over medium-high. Working in batches, add pork and cook, turning once, until deeply browned, about 3 minutes per side. Transfer to a rimmed baking sheet and roast until an instant-read thermometer registers 140°F, 8 to 10 minutes. Transfer to a cutting board and tent with foil to keep warm.
Meanwhile, wipe out skillet and return to medium heat. Add remaining 1 tablespoon oil. Add bell pepper and onion; cook, stirring often, until softened, about 3 minutes. Add corn, beans, and remaining ½ teaspoon salt; cook until heated through, about 2 minutes. Stir in chopped cilantro and lime juice. Serve succotash with pork and lime wedges, topped with cilantro leaves and stems.