The inside of the flowers is a greeny blue colour.
Thanks for help everyone. Never really inspected plants that closely, but yep, covered in minuscule white thingys.
Read up on alleviating the problem, don't want to try a pesticide yet so went with the blob of hand soap in my hand pump water sprayer, left 10 mins then rinsed.
Still no closer to figuring out what the chilis are tho