I was getting bored by my old chicken recipes, so I was looking for some new ideas. This sounded interesting: http://girlandthekitchen.com/rosemary-balsamic-chicken-thighs-grilled-veggies/. I am always looking for simple dishes, so I made a simplified version. It was still a success.
Combine balsamic, sugar, lemon juice, soy sauce, and garlic in a microwave safe dish and put into the microwave for 30 seconds to melt the sugar. Pour over chicken and refrigerate for at least an hour. Preheat oven to 400F and cook for 40 minutes.