When he says he's not a picky eater

My son was telling me he is not going to be a picky eater. When the test comes and I ask him to eat the dumpling with rice, he says he wants another dish. So I spooned some chicken thigh with soya sauce for him and ask him to try it. He was already crying when I tried to feed him. So he is still a picky eater even though he says he's not. It's my fault. I should not have believed him so easily when he is not able to mean what he says. After all, he's only 5. Eventually, he settles for chicken nugget with rice, one of his usual staples. At his age, I still have to constantly remind him to eat his chicken nugget and rice. He will spoon some into his mouth and then lie down on the sofa and lazing away before I  have to repeat my reminder again. As a parent, one of my duties is to be like an old broken record that repeats and repeats until he gets done with his meal. But at least, he's feeding himself already. Although at times, I still have to feed him, especially when he stops feeding himself.