Season the chicken and place chicken pieces, skin side down, onto a broiler pan. Broil the chicken, turning the pieces over once, cooking until the chicken is browned and cooked through, about 20 minutes.
Slice off 1 end of each of 3 lemons. With a sharp knife, supreme lemons: in a downward motion, peel away rind and pith. Separate segments of lemon wedges from skin and put in a bowl. Squeeze out juice from leftover skins. Juice the other 3 lemons into same bowl. Add oil, parsley, salt, and pepper.
Once chicken is cooked, remove from the broiler and cover with sauce. Return to broiler and cook for 5 minutes. Remove and serve.