Most guys here have a pretty good basic and useable grounding in nutrition.
Ever thought about offering a "diet guru" service to just regular people?
Like a pre-contest prep guru, but just for the average guy/gal looking to lose weight.
advertise on ebay, fairly informal,
1-1 advice and meal plans tailored to the customer, e-mail/phone. correspondance.
I am not suggesting trying to start a business, but there are plenty of people on e-bay who would go for this kinda thing.