I've written about tilapia before. Perhaps my children are in a minority because they eat seafood, but I'd also bet that if a kid is willing to try fish, tilapia is your best hope. It is mild and takes on sauces and crusty stuff so well you can really make the dish taste like anything.
I groaned when I saw this on my meal plan but I pulled it together and got it on the table in less than 30 minutes with lots of interruption from the three angry young men in my house.
In cuisinart:
Candied Pecans
Cayenne pepper
salt
pepper
mustard powder
coat fillets in evoo, then in the nut mixture
bake at 350 for about 8 minutes on first side and 5 minutes on the flip side.
Israeli couscous - I use a box from Trader Joes. I use vegetable broth instead of water and it adds a bit of taste. Kids loved it, so did the Roomba.