Lime Chicken Tacos

1-1/2 pounds boneless skinless chicken breasts
3 Tbsp lime juice
1 Tbsp chili powder
1 cup frozen corn
1 cup chunky salsa
12 fat-free flour tortillas (6 inches), warmed
sour cream, shredded cheddar cheese and shredded lettuce, optional
Place the chicken in a 3-qt. slow cooker.  Combine lime juice and chili powder; pour over chicken.  Cover and cook on low for 5-6 hours or until chicken is done and tender.Remove the chicken; cool slightly.  Shred and return to slow cooker.  Stir in corn and salsa.  Cover and cook on low for 30 minutes or until heated through.  Serve in tortillas with sour cream, cheese and lettuce if desired.