For Marinade: In large bowl mix together orange juice, lime juice, chile powder, cumin and jalapeño pepper. Pour marinade into large plastic resealable bag.
For Chicken Wings: Place wings in bag of marinade, shake to coat and refrigerate for 1 hour to overnight.
Remove chicken wings, wipe off excess marinade and place on large platter. Season with salt and pepper.
Set clean, well-oiled grill to medium-high heat. When grill is hot, using tongs, place wings on grill (2 inches apart) and cook with grill lid open until charred on both sides, about 6-8 minutes per side. Remove chicken from grill and place on platter when juices run clear or internal temperature reaches 170°F.