My favorite truck stop is the Buckhorn at Exit 34 A of Interstate 80 in Pennsylvania. The food is good and the portions are huge. There’s another Buckhorn farther west along I-80 at Exit 23. It’s smaller, but it’s good.
There are a couple of Flying Js in Central Ohio. One north of Columbus off Interstate 71 on Ohio 37 at Sunbury and the other off I-70 near Hebron, east of Columbus. The food and service at the one off I-71 is far superior to that at the other. I like the "country fried steak" for breakfast. They serve a very large piece of meat.