Preheat the oven to 400.
Season chicken breasts with Italian seasoning, salt and pepper.
Heat olive oil in a large skillet over medium high heat. Add chicken breasts and sear on both sides until golden brown, about 4 minutes per side.
Remove the chicken breasts and place in a single layer in a casserole dish.
In the same sauté pan, add the remaining ingredients (chicken broth, butter, lemon zest and juice and garlic). Scrap any browned bits off the bottom of the pan and mix everything together. Pour the mixture over the chicken breasts in the casserole dish.
Bake at 400 for about 20 minutes, or until the chicken is cooked through (and a thermometer reads 160-165), spooning some sauce over the tops of the chicken about halfway through the cooking time.
Serve chicken with extra sauce over the top.
