I think I have an average to small appetite - I seldom finish an average size restaurant entree, & DH has an average sliding a bit toward larger appetite. At home we split one split chicken breast with veggies for dinner.
At VN we shared the salad for 2 & a large pizza ( the in between size one). DH had dessert. There was 1 slice of pizza left. We couldn't have shared with more & been satisfied.