Marinate chicken breast in Lawry's Hawaiian Marinade for at least 1 hour or overnight in refrigerator.
Slice 3 thick slices off of Pineapple. Grill for approximately 10 minutes. Let cool and then dice.
Grill chicken breast until cooked throughly. Remove from grill and shred chicken with a fork.
In a large bowl mix corn, diced red onions, diced red bell pepper, shredded chicken.
Cut lime in half and squeeze both halves over mixture. Stir well.
Add Cumin, Salt and Pepper. Mix well.
Fill soft taco shells with chicken mixture and top with diced avocado.
Enjoy!