1. To prepare salsa: In medium bowl, combine apples, chile pepper, onion, lime juice, salt and pepper to taste; cover and set aside while preparing chicken.
2. (If making several hours or day ahead, refrigerate salsa.).
3. To prepare chicken: In large bowl, combine white wine, apple juice, lime zest, 1/2 teaspoon salt and 1/8 teaspoon pepper.
4. Add chicken and turn to coat with mixture; cover and refrigerate 30 to 40 minutes.
5. Heat grill.
6. Drain and discard chicken marinade.
7. Grill chicken until cooked through; serve with apple salsa.