We did get both the Chicken and the Pot Roast. Not enough gravy on the pot roast for me (since it was a fairly dry piece). Will only order chicken from now on... Hope this helps.
Personally I would stick with the chicken (not because the others are bad, but because the chicken is so good). After that, my order of preference would be the Pot Roast and then the Pasta.
The chicken of course! But the pot roast is actually pretty good as well - and you can always ask for extra gravy (I think the pot roast gravy is actually better then the chicken gravy). A lot of times we'll get an order of each and share.
Chicken and the Cobb, and sometimes we get one of each and then get salad and dinner . Although my daughter gets the children's pasta with the white sauce that has chicken in it and it is fairly tasty.