These lemony chicken breasts are just 268 calories with 53.7g of protein!You only need a handful of ingredients (many you already have) and you'll only need 1 lemon as you use the zest and juice of just one. Special Tip: I like to use a cast iron skillet to both brown and bake the chicken breasts as it makes less cleanup. But you can easily brown them in a pan and then move them to a baking dish.