Place the sugar, salt and chilli flakes into the Thermomix bowl and mill 5 sec/speed 5. You need a bit of texture.
Heat a small amount of EVOO in a frying pan until 170°C approx. Fry a couple of wonton wrappers at a time, draining on paper towels.
Whilst still hot, toss through the sugar mixture. Cool. Store in an airtight container in the fridge until use. You can make these well in advance of needing them.