Preheat oven to 350F.
In a small bowl, combine Dijon mustard, honey, olive oil, salt, pepper and oregano (Cayenne pepper, optional).
Place chicken in a greased baking dish. Pour the sauce over it. Make sure it is evenly coated.
Bake chicken uncovered for 30-40 minutes, until the top is golden and the internal temperature of the meat is 165F.
Take out of the oven and serve with rice, vegetables or potatoes.