Preheat your oven to 400°F (200°C) so it’s fully hot before baking. Lightly grease a baking dish with olive oil to prevent sticking. I’ve learned this step makes cleanup much easier later.
In a bowl, whisk together Dijon mustard, whole grain mustard, maple syrup, olive oil, and minced garlic. The sauce should look smooth and glossy. This mixture is what keeps the chicken juicy and flavorful.
In a separate bowl, mix panko breadcrumbs, grated Parmesan, thyme, smoked paprika, salt, and pepper. Stir well so the seasoning is evenly distributed. This ensures every bite has the same crunch and flavor.
Place the chicken breasts in the baking dish and spoon the maple Dijon sauce over them. Make sure each piece is fully coated. Press the breadcrumb mixture generously on top, creating a thick, crunchy layer.
Transfer the dish to the oven and bake uncovered for 30–35 minutes. The chicken should be cooked through and the topping golden brown. If needed, broil for 2–3 minutes at the end for extra crispiness.
Let the chicken rest for about 5 minutes after baking. This allows the juices to redistribute and keeps the meat tender. I never skip this step anymore—it really makes a difference.