01 - Preheat the oven to 400°F. Lightly grease a baking dish with olive oil or cooking spray.
02 - In a mixing bowl, whisk together the Dijon mustard, whole grain mustard, honey, olive oil, minced garlic, smoked paprika, salt, and black pepper until smooth and well combined.
03 - Place the chicken breasts in the prepared baking dish. Pour the honey mustard sauce over the chicken, ensuring each piece is evenly coated on all sides.
04 - Bake uncovered for 25–30 minutes, or until the chicken is cooked through and juices run clear. The internal temperature should reach 165°F when checked with a meat thermometer.
05 - For a caramelized, golden-brown top, switch the oven to broil and cook for an additional 2–3 minutes. Watch carefully to prevent burning.
06 - Remove from the oven, garnish with chopped fresh parsley, and serve hot alongside roasted vegetables, rice, or a fresh green salad.