It is not "unheard of" to have a "Take-out Menu" that differs from the regular menu and includes only the items you think will "travel well".
By the way, can we broaden this discussion for a minute from take-out to delivery? How do the restaurant pros here feel about cooperating with services such as https://www.waitersonwheels.com/wowx.html?cPath=10 . In San Francisco, there are several of them and they are very popular with people who work through or during meal hours or people such as I was when I slipped a disk and was told by my doctor to stay in bed for a month. But is there any sort of downside to this for the restaurant that isn’t apparent to the diner? I’ve often wondered.