Prep: In small bowl, combine 3 tablespoons lime juice, oil, cocoa, garlic, chile powder, cumin and lime zest; salt and pepper to taste. Generously rub over both sides of pork chops; set aside.
Combine: In medium bowl, combine mango, avocado, onion, jalapeño, remaining 1 tablespoon lime juice and 1 tablespoon cilantro; salt and pepper to taste. Set aside.
Create: Prepare grill to medium heat. Place pork chops on grill; grill, turning occasionally, until internal temperature reaches 155°F on an instant read thermometer (about 10-12 minutes).
Remove from grill; let stand 5 minutes. Serve pork chops with salsa.