Need help/advice please chilli pepper plant leaves have a problem ?

[AJ WEBB]

Hi, there are in a greenhouse, I've not fed with any thing yet. I only water when needed, I let them dry out first. Not to the point there keeling over but the soil is pretty dry

[Scarlet]

Well, I'm sticking to my guns - I still don't think it's anything major. It still looks like "burn" to me. If it hasn't been fed, give it some diluted tomato feed.