S.H.
Pack what he likes.
Otherwise, many kids at school, do not even eat, even if they are hungry.
I know... I volunteer at the cafeteria at my kid's school, and see this all the time.
Just pack what he likes.
Does not have to be fancy nor a gourmet buffet.
Also have him bring a water bottle to school.
Label everything with a Sharpie pen, with his initials.
My son, just liked having sandwiches, everyday.
That is what he ate and liked. He never got tired of it.
He ate.
That is the main thing.
Otherwise, he will not eat and going all day without food in their tummy from breakfast time, is not good for a child. Nor for their energy levels or concentration ability in school.
Just ask your son, what he likes and will, eat.
Before you 'experiment' with the pasta, make it at home... and see IF he eats it. Then if he does, you can send it to school as an option.