So what would u do?

Every year me and my child go through the "I don't want to eat this phase" he says he's hungry he says he's starving but anything I put in front of his face he doesn't want to eat it and when I fix supper he will run off and play and not eat it until it ain't no good anymore and I have to throw it away and then after I throw it away he claims he's hungry and he starving again however I tell him know because he should've eaten when I gave him the food this is an all day every day situation but when I was growing up we had a rule in my house and that waswe had to eat what was given to us when it was given to us so my question is what would you do if you were experiencing the same thing with your child