Usually, any specialty item that was good last time they offered it. Back by popular demand doesn't always warrant quality. When an unknown item comes along, there are usually several factors that need to be considered before choosing it, especially at a declining balance meal. Declaring something fit to eat Always inspect the chicken in the wraps before ordering one. Don't judge food by how good it smells.
Appearance usually has no bearing on how the item tastes unless it is burnt or very undercooked.
Figure out what all of the ingredients are before consuming. Espcially true for pizza. The Spanish Rice is always bland, but the paler it is, the less flavor it has. Note that the converse is not neccessarily true. Pay attention to how often the item is offered.