Pepper leaves turning black

[Gms]

Hello, beginner gardener in need of some help!
Having never grown anything before, i decided to try my hand at growing some pepper plants.
All was going well until a few weeks after i transplanted them outside i started noticing black spots/stains apperaring on the underside of the leaves, over a short period they have gotten gradually worse and the black marks have spread to the front. could anybody help identifying what has happened to them? and are they doomed?

[poohpouri]

some of my peppper leaves started going same way as yours,not sure what caused it but i pulled affected leaves off

[Gms]

Thanks for the reply.
The problem is that the underside of pretty much every leaf has the black spots on now

[Alison_Kristina]

Looks like some form of fungus maybe?

Maybe this will help: Pepper Growing Problems: Troubleshooting :: Harvest to Table

Ali.