Is This A Problem??

So the other morning Kylie and I go downstairs to eat breakfast and usually I give her a couple of cereal options or she can have oatmeal. Well, this morning she was having none of it, so I open the fridge and she says, "pickles, pickles" and then she points to the orange juice. This was all she wanted. What am I suppose to do? It was either starve or eat pickles and OJ for breakfast. (I put the plate of Tootie Frooties on her tray to make me feel like a better mother since they are "breakfast" foods) I have always had a hard time knowing whether or not she is getting all the nutrients she needs. Its hard making sure she is getting all the vitamins and fats and calcium and everything else. She used to be really a pretty good eater, but it seems lately she has become kind of picky. Sometimes I think its better that she just eats something rather that nothing. All I know is she's growing out of her clothes and seems to have plenty of energy so it can't been all that bad, right?