I'd say normal. My sons 9 not heavy built but ALWAYS hungry. To the mom I'd say. Just wondering if Joe eats a lot at home? Here I find he's always hungry and saying he wants to eat so I feed him. Is this normal for him or should I restrict the eating to our planned eating times? U can also ask mom to maybe bring some of his favourite snacks/foods from home, so you have more options for him. Also try to feed him stuff that's filling. If no nut allergies do PB, and mixed nuts. Portein like chicken. Growing school kids eat more then toddlers lol