There are a couple of differences. First, the portion sizes for the 2 serving Lite menu are smaller than for all other menus. For example, the 2 serving Lite menu uses 4 ounce chicken breast, while all other menus use 6 ounce chicken breasts. Second, the 2 serving Lite entrées are around 400 calories or less per serving, while all other menus often have more calories per serving.