This comic is from August 8, 1973, right when many businesses started putting up “No Shirt, No Shoes, No Service” signs in reaction to hippies. The comic is “Archie”, written by Bob Montana.
The character here is Jughead.
What’s odd here is that the restaurant doesn’t seem to mind that Jughead is shirtless, just shoeless. And we see the kind of improvisation that barefooters sometimes have to resort to.