In a small bowl, combine the chili powder, cumin, salt and cayenne. Sprinkle half the spice mixture over turkey. In a skillet, brown turkey in 2 teaspoons oil for 3-4 minutes on each side. Add broth and lime juice to skillet. Reduce heat; cover and simmer until turkey juices run clear and thermometer reads 170°, turning once, 15-18 minutes.
In a small skillet, saute the onion and jalapeno in remaining oil until crisp-tender. Transfer to a bowl. Add the beans, corn, tomato, picante sauce, cilantro and remaining spice mixture. Serve turkey with salsa and lime wedges.