If your husband likes your cooking, don't sweat it. Kids are naturally scornful of stuff that doesn't have fat or sugars or some such thing that tastes good to undeveloped taste buds.
Try to convince your man to help with meals if not cook them himself, and in the meantime seek some advice or try a cookbook.
Don't make wacky dishes or try anything with a strong flavor to it, as a remotely picky kid will hate it. Avoid veggies that are naturally spicy or tangy. And, as much as it may kill a health-conscious mother to do it, don't buy low-fat, low-sodium, low-etc anything. They really do taste worse than the standard. Also consider making stuff like pizza, which is much healthier homemade than from a chain.