01 - Preheat the oven to 400°F (200°C). Lightly grease a 9x13-inch baking dish.
02 - Pat chicken breasts dry and season both sides with salt, black pepper, and garlic powder.
03 - Heat olive oil in a skillet over medium-high heat. Sear chicken breasts for 2 minutes per side until lightly golden. Chicken does not need to be cooked through.
04 - Place the seared chicken breasts into the prepared baking dish.
05 - Spread Alfredo sauce evenly over the chicken. Scatter sundried tomatoes on top, then sprinkle with mozzarella and Parmesan cheese. Finish with dried Italian herbs.
06 - Bake uncovered for 25–30 minutes, or until chicken is cooked through (internal temperature 165°F/74°C) and cheese is golden and bubbling.
07 - Remove from oven and let stand for 5 minutes. Garnish with chopped fresh parsley if desired. Serve hot.