Mash the Black Garlic with a fork until it forms a paste. Stir in Italian Herb Seasoning, sea salt, Porcini Mushroom Powder, and goat cheese until well incorporated. Heat a grill until hot. Sprinkle the balsamic vinegar over the chicken breasts and season with salt and pepper. Grill until well browned (about 6-8 minutes), turn over. Smear ½ of the black garlic/goat cheese over the cooked side of each breast. Grill until goat cheese begins to form a crust (about 2-5 minutes).