My thoughts are along the same as CCinNJ, Seamus, and others. An appetizer with an entree is too much. There's three of us who eat out for lunch fairly often, and if the appetizer looks interesing, we'll split it. Takes the edge off being hungry while waiting for the meal, but doesn't fill you up, and it's fun sharing and talking while waiting for the lunch.
There's one restaurant here whose appetizers are better than the entrees. I like to order a cup-sized portion of soup or gumbo, and 1-2 appetizers, and it's very filling.