Fire up the grill and season your boneless chicken breast with salt and pepper then brush your chicken with teriyaki sauce. Cook on the grill for about 10-15 minutes on both sides or until there is no pink inside; periodically flipping and brushing with more teriyaki sauce. With about 3 minutes remaining on your cook time top your chicken a slice of swiss cheese and continue cooking until the cheese starts to melt. Slice a pineapple and grill for about 3-5 minutes on both sides. Build your sandwich like so with green chili's and sliced red onions. Enjoy!