Pre-heat oven to 375°F.
Lightly grease a 9-inch x 13-inch baking dish.
In a small mixing bowl, whisk together melted butter, honey, dijon mustard, salt, and oregano.
Place chicken breasts into the baking dish.
Surround the chicken with the quartered potatoes.
Drizzle honey mustard mixture over everything.
Place in the pre-heated oven for about 40 minutes or until potatoes are tender and chicken reaches an internal temperature of 165°F.