3d = remore islanders may be scatterbrained without one - _ N _ R _ D - is it INBRED (anagram of BRAINED without the "a")?
14d = williong in the past, say, to put on show = F _ I _ N - is it FEIGN?
21d = big meal in ranch - S _ R _ A _ - is it STREAK (steak with an "r"?