Preheat the oven to 375°F (190°C).
Season the chicken breasts with salt and pepper on both sides.
In a mixing bowl, whisk together honey, Dijon mustard, whole grain mustard, olive oil, apple cider vinegar, and minced garlic.
Place the chicken breasts in a baking dish and pour the honey mustard sauce over them, ensuring they are well coated.
Bake for 20 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
Let the chicken rest for 5 minutes before serving.
