Preheat the oven to 400°F. Spray a baking dish with non-stick cooking spray. Season both sides of the chicken with salt and pepper.
In a small bowl, combine ¼ cup brown sugar, 1 Tbsp water, 1 tsp garlic powder, 1 tsp dried thyme, ½ tsp salt, and ¼ tsp ground black pepper.
Place the chicken in the baking dish and pour the brown sugar sauce over top.
Place the dish in the oven and bake for 20-25 minutes, or until the chicken is fully cooked and reaches an internal temperature of 165°F with a meat thermometer.
Remove from the oven and add to serving plates. Drizzle the liquid from the baking dish over top of the cooked chicken. This sauce also tastes great drizzled over pasta and rice!