To me, Chakalaka sounds like a celebration used in NBA Jam on the mega drive back in the day, but the internet teaches me that it's a well known South African vegetable relish that's usually spicy. Sounds like a good thing to put into a crisp flavour...
Simba make some pretty average ridged crisp really, they're thin and could do with a lot more ridge. The flavouring application could do with a mix.
That said - the flavour of Chakalaka is pretty good! Sure these are filled with MSG but the spice of onion & garlic, with maybe a sweeter tamatoey-paprika kick makes for a good enough flavour.