Remove the turkey from the refrigerator, and let it rest at room temperature for about 1 hour. Do not rinse the turkey.
Preheat oven to 425°F.
In a small bowl, combine butter, paprika, onion powder, garlic powder, thyme, oregano, basil, cayenne pepper, and lemon juice. Mix until smooth. Reserve ¼ cup of the Cajun butter, and store it in the refrigerator to use in the gravy.
Place the turkey, breast side up, in a roasting pan. Gently loosen the skin over the turkey breast with your hands, being careful not to tear it. Rub 3 tablespoons of Cajun butter under the skin. Rub the entire turkey with the remaining Cajun butter.
Tuck or tie the legs with kitchen string, and tuck the wings under the bird.
Pour the chicken broth into the bottom of the roasting pan.
Bake the turkey at 425°F for 30 minutes. Then, reduce the oven temperature to 325°F. Continue cooking for an additional 2 to 2 ½ hours, or until a meat thermometer inserted into the thickest part of the thigh reads 160°F.
Every 30 minutes baste the turkey with pan drippings. (Cover with aluminum foil if the turkey browns too quickly.)
When done, remove the turkey from the oven and transfer it to a serving platter. Tent with aluminum foil and let it rest for 30 minutes.