Pharmacy would be a great degree...a little long, but once you are done then you could pay for your flight training out-of-pocket (pharmacists get paid well).

Even better, pharmacy is a GREAT backup/complimentary career to aviation...it is flexible, high paying, can be done part-time, you can get a job anywhere, and you can do it full-time when you lose your flying job due to furlough, medical, or bankruptcy. Aviation is no longer a career which you can rely on to provide a good secure income, especially during your first 10-15 years.

Physician's assistant is another good complementary career.

Stay away from aviation degrees, they are useless in the real world if you need a non-flying job (aerospace engineering is OK).