LAROI performed Tuesday night in Springfield, MO, and afterward, he and a group of buddies went to Dublin's Pass Irish Pub & Restaurant for some food and drink.

The joint's manager, Autumn Gray, tells TMZ ... the Aussie rapper was kind to all her staff and patrons at first, even posing for photos with some excited fans -- but, ultimately, they seated LAROI and co. in a private room.

Autumn says the group ran up their bill ordering chicken wings, mac & cheese, brownies and more ... and, although they stepped outside for smoke breaks during the meal, they assured their server they weren't leaving.

Of course, that's precisely what happened according to the restaurant. When their server tried to get a head start on bussing dishes from the table ... they discovered everyone had bolted.

As soon as the manager found out about the dine and dash, she says they searched the premises but TKL and his entourage were long gone.

The total bill was $133.58 and while Autumn acknowledges it might have been a careless mistake by LAROI, she points out servers make most of their money through tips ... so, it's messed up one of her employees did all that work for free.

Autumn says she tried contacting TKL, but hasn't gotten a response. We also reached out to a rep, and so far ... no word back.