Preheat your oven to 375°F (190°C).

In a mixing bowl, whisk together the Dijon mustard, honey, olive oil, apple cider vinegar, garlic powder, onion powder, salt, and pepper until well combined.

Place the chicken breasts in a baking dish and pour the honey mustard mixture over them, ensuring they are thoroughly coated.

Cover the dish with aluminum foil and bake for 25 minutes to keep the chicken moist.

Remove the foil and continue baking for an additional 15-20 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and is golden brown on top.

Once cooked, remove from the oven and let it rest for about 5 minutes before slicing.

Garnish with fresh parsley if desired and serve warm.