Preheat Oven: Preheat the oven to 375°F (190°C).
Prepare Glaze: In a bowl, whisk together mustard, honey, olive oil, garlic, paprika, salt, pepper, lemon juice, and thyme.
Coat Chicken: Place chicken breasts in a baking dish and brush both sides generously with the glaze.
Bake: Bake for 20–25 minutes, basting once halfway, until the chicken reaches an internal temperature of 165°F (74°C).
Broil (Optional): For a caramelized finish, broil for 2–3 minutes at the end.
Garnish & Serve: Sprinkle with fresh parsley and serve with roasted potatoes or a fresh salad.