This is the white stuff

Is that soil as wet as it looks?

Looks like leaf miner damage on the leaves.

Usually, if wilting persists more than a day or 2 after transplanting and you know the soil isn't going completely dry, it's an over-watering problem.

Al

As Al said could be a over watering sign. I had the same issue a few weeks ago. I now water once a week once my soil looks dry and my plants are much happier and grown way bigger since.

And the leaves do look like leaf miner tracks. They dont hit my peppers but they hit my other veggies alot here.
Rey....

No it's actually dry the soil on top there i probably water once every 3 days but the temperatures here have been like 35 degrees Celsius so they dry out pretty quick. What are leaf miners? Are they a problem if so what should I do to get rid of them?
Thanks Jarryd

They're tough to be rid of because they're protected by the leaf epidermis and systemic insecticides, which are effective, aren't good choices for food crops.

Don't water until a sharpened wooden dowel pushed to the bottom of the pot comes out dry. You'll quickly figure out a rhythm that has you watering a little ahead of time to avoid the soil becoming completely dry. Plants hate wet and dry soils - preferring soils about as damp as a well wrung out sponge.

Al

Alright so I let them dry out stuck a wood skewer in there and it came out bone dry so I gave them a little water they perked up a bit over the last couple of days but then they drooped again is it likely to be wilting because the soil was dry?

Yes - prolly from to little water if the stick was dry.

You don't want to water in sips. It causes ALL the unused salts from fertilizer solutions and tap water to accumulate in the soil. Flush the soil so at least 15-20% of the total volume of water applied exits the drain hole (carrying accumulating salts with it). If you can't water this way w/o risking root rot or impaired root function, you need to take a closer look at you're soil, because you're going to be fighting it for control of your plants.

Al