Wow, you know, it's interesting the range of calorie estimates here. Anything from 100-250 calories!
Just goes to show that even calorie counting can be confusing, and you can be off by potentially hundreds of calories in a day from mis-estimating. I mean, if it was really 100 calories and you logged it as 250, you're eating 150 calories less than you think. But if it's really 250 calories and you log it as 100 calories, that's 150 more -- and if you ate chicken breast every day, that's 1.5 pounds of calories in a month, 18 pounds in a year!
This is why I wish all food had a magic button you could press, to instantly see how many calories are in it.