The Man Down singer, 23, has been shooting the clip for her new song We Found Love in the country ahead of her gigs there this week.
And she shocked diners and workers at the eaterie in Belfast by using it as a location for part of the video before ordering 75 fish suppers for her crew.
Kathy Brennan, owner of The Chippie, told British newspaper the Daily Star: 'She was brilliant.
'Her people had paid us a bit to use the shop for filming after we closed. We stood outside watching as she danced wildly all over the tables.
'Then when we went back in she wanted 75 portions of fish and chips for her and her staff.'
Brennan usually charges £5.50 for a portion of fish and chips but raised the price to £7.
She added: 'We were working after hours and I had to bring in staff, so I thought: 'Why not charge extra?' We weren't going to give them away.'