It's not OK to send a child to bed without dinner unless they are not feeling well and not eating.
A child should never be sent to bed without dinner as punishment.
However if the child refuses to eat or is sick then it's okay if the child goes to bed without dinner.
We all need food to stay healthy and so not feeding your kid and letting them go hungry as punishment is never a good idea.
I've heard of some parents sending their kids to bed without dinner because of misbehavior but that is never a good thing and is considered neglect.
Always allow the child to eat if they will eat and then punish the child in other ways such as through time out, spanking, taking toys, games etc away.
My parents used to send me to bed without dinner when I would misbehave and it never made me behave but instead when I went to bed without dinner I got more angry as I was hungry.
I would sneak out of my room in the middle of the night and get something to eat anyway.
My parents loved me and thought they were doing everything right because my dad's parents also used to send him to bed without dinner.
So they didn't starve me at night to hurt me but it didn't help either.
I would never send my kids to bed without dinner or make them go hungry on purpose.