Make sure to season the chicken well for maximum flavor. Use a meat thermometer to check the internal temperature of the chicken; it should reach 165 F for safe consumption. Consider marinating the chicken for a couple of hours before cooking for even more flavor. If you have leftovers, store them in an airtight container in the refrigerator for up to 3 days. You can also freeze the stuffed chicken breasts before baking; just wrap them well.