My daughter is one of the pickiest eaters. Since it's usually just me and my two girls, I try to think of something she would like. Both of my children will usually eat spaghetti. I often get a veggie sauce, though my older daughter never eats the veggie chunks. We also eat peanut butter sandwiches a lot and the only thing she will eat when we go out is chicken nuggets/strips and French fries. I've gotten to the point where I usually just fix something and she'll eat it when she gets hungry.
We go out to eat when my boyfriend is home because he's even worse. Too much sauce, not enough salt, doesn't like pepper, etc. and I'm done....
Best of luck finding what works for your family!
"We do not need magic to transform our world. We carry all of the power we need inside ourselves already." -J.K. Rowling