Frustrating Sometimes

I noticed lately that my oldest one is not eating good like what he is supposed to. I have been trying to prepare some good food that i think he would get interested to eat it but to no avail, i failed. He is not picky at all it is just i think he lost his appetite and i worry about him. He plays a lot but then very little food he only take from here and there. Hubby said that i should not get worried to much since he bites food from here and there. But since i am a "Worry-all-the-time-mother" as what my husband calls me, i am not happy at all seeing my son not eating properly. I even used some tricks to him so he would have the interests to eat the food i prepare for him. Ughhh, sometimes being a mother can be frustrating especially times like this, kids don't eat like what you wanted them to and what they are supposed to.