Heat balsamic vinegar and honey in a saucepan to make Balsamic glaze. Heat until boiling and then reduce heat and simmer for approximately 15 minutes until thick enough to coat the back of a spoon. Set aside and let cool.
Baste chicken breast with balsamic glaze , reserving some to drizzle over finished salad, and then grill or oven roast until it reaches an internal temperature of 165.
Prepare the salad by placing spinach, sliced strawberries, and thinly sliced onion in a large bowl.
Toast chopped peans in a dry skillet for 2-3 minutes.
Slice the chicken breast and place on top of the salad, add toasted pecans, and a drizzle of the balsamic glaze.