Preheat your oven to 375°F (190°C).
Season the chicken breasts with garlic powder, salt, and pepper on both sides. Place the seasoned chicken in a greased baking dish.
In a mixing bowl, combine the honey, Dijon mustard, chicken broth, and cornstarch. Whisk until smooth.
Pour the honey mustard sauce over the chicken breasts, ensuring they are well coated.
Cover the baking dish with aluminum foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 15-20 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
Once cooked, let the chicken rest for a few minutes. Drizzle the remaining sauce over the top and garnish with chopped parsley if desired.
