Mix all the balsamic chicken marinade ingredients together in a large bowl. Then add the chicken, salt, pepper, and mix until the chicken is fully coated. Transfer to the fridge, and let the chicken marinade for 2 hours, or overnight.
Quarter the bocconcini and cherry tomatoes and add to a bowl. Add torn basil, salt, pepper, EVOO, and balsamic to taste. Mix until fully combined and transfer to the fridge to let the flavors marinate together.
Heat a grill over high heat and spray with non stick spray. Cook your chicken for 2-4 minutes per side (depending on thickness), or until charred and internal temp reaches 165°
Plate your chicken, and top with the caprese salad and another splash of balsamic. Enjoy!