This Boursin Stuffed Chicken Breast recipe features tender boneless skinless chicken breasts stuffed with a flavorful mixture of creamy Boursin cheese, mozzarella, sautéed spinach, garlic, and Italian seasoning. The chicken is seared on the stovetop to develop a golden crust and then baked to juicy perfection, making for a deliciously elegant yet easy-to-make dinner that pairs wonderfully with mashed potatoes or rice.