Ingredients:
1 lemon, juiced
1 lime, juiced
1 tablespoon cider vinegar
salt and black pepper to taste
3 skinless, boneless chicken breast halves – cut in half
6 pineapple rings
2 tablespoons teriyaki sauce
6 slices red onion
6 Hawaiian bread rolls – split and toasted
6 lettuce leaves – rinsed and dried

Directions:
Whisk together the lemon juice, lime juice, cider vinegar, salt and pepper in a large glass or ceramic bowl.
Add the chicken and toss to evenly coat.
Cover the bowl with plastic wrap, and marinate in the refrigerator for 1 hour.
Preheat an outdoor grill for medium-high heat, and lightly oil the grate.
Remove the chicken from the marinade, and shake off excess.
Discard the remaining marinade.
Grill the chicken for 5 to 7 minutes each side, or until juices run clear when chicken is pierced with a fork.
Grill pineapple for 2 to 3 minutes per side, or until heated through and grill marks appear.
Spread 1 teaspoon teriyaki sauce on the bottom half of a toasted roll; next add a lettuce leaf, a piece of chicken, a pineapple round, and an onion slice.
Replace the top and repeat with the remaining rolls.