How to Make It
Preheat the oven to 375°. Line a baking sheet with parchment paper.
Rinse the chicken and pat dry. Season with salt and pepper and set aside.
In a large bowl, combine the olive oil, spicy brown mustard, balsamic vinegar, mustard powder and garlic. Toss the chicken in the marinade.
Lay the chicken on the lined baking sheet skin side down. Bake for 20 to 25 minutes. Turn the chicken over and continue baking for another 10 minutes, or until cooked through.
Garnish with parsley and serve.