SAUCE: While the chicken is cooking, combine the sugar, seasoning sauce, balsamic vinegar, and chicken stock in a small bowl; set aside for now. When the chicken is done, Add 2 tablespoon of butter to the pan and cook the mushrooms for 5-7 minutes or until the mushrooms turn golden and brown around the edges. Season the mushrooms with minced garlic, red pepper flakes, and fresh thyme for 30 seconds before adding the prepared sauce to the pan. Allow the sauce to come up to a simmer, use a wooden spoon to scrape anything that might be stuck to the pan. Then, lower the heat so that it just simmers, let cook for 3-6 minutes or until it reduces by half. When reduced, add the remaining tablespoon of butter to the skillet and gently stir until it melts into the sauce. Once combined, taste and adjust with salt as needed. Then, add the chicken back to the skillet, and allow it to simmer in the sauce for 1-2 minutes on the low setting. This will help thicken the sauce a bit further. Serve topped with parsley over pasta, with mashed potatoes/cauliflower, caulirice, or with fresh bread and a salad.