Balsamic Mustard Chicken

My friend Hiroko LOVEs this dish. Chicken is marinated in a mixture of balsamic vinegar and mustard (It's already great just those ingredients but I added rosemary, garlic and honey.. ) for a few hours then roasted in the oven.
For a side dish, roasted red-skin potato was added and some broccolies.
You can roast potatoes in the same temperature with chicken.