'Bachelor' Nick Viall's Hometown Date was a Deli-ght!!

Nick Viall's got puppy love written all over his face, arm in arm with a cutie brunette ... and TMZ has the video.

The 'Bachelor' was spotted in his hometown of Waukesha, WI where he was presumably on a hometown date ... meaning the chick on his arm reached at least one of the final stages on season 21 of "The Bachelor."

Check out the vid ... Nick and the brunette get handsy as they make their way to Rochester Deli where they scarfed down a couple sandwiches, coleslaw and cookies.

Gotta love a girl who can eat!