Not sure if it's the same chippy but stonehaven is apparently the home of the deep-fried mars bar. I've got a mate who lives there and one of the chippies has a plaque-type thing on the wall comemorating its inception.
The guy who owns that place - Callum - is a mate. He went to Japan for a couple of weeks and was cooking fish and chips in a department store - Osaka I think. He used to make up and supply batter to the oil rigs, might still do. Great bloke.
Best fish and chips I've ever had is The Bay in Stonehaven, Aberdeenshire. Multiple award winners https://thebayfishandchips.co.uk/awards/
I used to nip down there from Aberdeen on the Triumph. Miss that.