Reserve ~1-2T of sauce to the side in a separate bowl or container. Brush remaining sauce over chicken breasts.
Grill chicken ~5-6 mins per side or until cooked through to 165 F. Remove from grill and allow to rest 5-10 mins.
Slice chicken and toss w/ reserved teriyaki sauce.
For the Salad:
Peel, core & chop 1 pineapple. Pour any juice on cutting board into container. Place 1/2c pineapple chunks in the blender and pulse until liquid. Pour into container w/ other pineapple juice. Combine w/ 1T white wine vinegar + 1tsp Dijon mustard + 1/8tsp garlic powder.
Slice 2 avocados.
Build salads: mixed greens + avocados + pineapple chunks + pineapple vinaigrette and top w/ teriyaki chicken.