Parents are concerned about little things. Listen to the common denominator here. Parents are concerned about what kids eat, kids are concerned about going potty. Parents are concerned with who their kids are hanging out with, about obedience, raising good kids. They know it's important.
Parents are concerned about getting kids in bed.
Better yet keeping them in bed. But, if you think about it, most of the questions I get, parents are concerned about the most natural things in life. Take things in stride. Don't get needlessly involved in things like what your child eats. In a power struggle, parent, you lose.