The squiggly lines are evidence of leaf miners, not whitefly.

Remove the affected leaves.

Uh-uh whitefly will leave those squiggly lines too. Lift or shake the plant and whitefly will take to the air. Neem oil will work. There are yellow sticky cards you can buy to hang near where they are. Whitefly are attracted to them. Don't remove any that get caught because if they were ready to mate they will attract others

It was said: "Uh-uh whitefly will leave those squiggly lines too"

Not so.

Any squiggles from whiteflies are on the undersides of the leaves and are egg-laying trails. As such, they're *not" visible from the top. Plus, they can be rubbed off.

OP has leafminers.

You may have infestations of multiple pests, but Jean and
Rhizo are correct, whitefly do not, ever, leave mines inside the leaves.

I appreciate the replies. I do have whiteflies but they're under control now. Also, the leaf miners are gone after removing the leaves as suggested. You guys have been great help.

By the way, the jalapeno plant is going strong now. These babies are growing quick.
{{gwi:1182747}}

It is never necessary to remove leaves that have indications of leaf miners since most times when you see that evidence the larva have dropped out of that leaf to the soil to pupate. If the wee bugger is still in the leaf you can simply squish it and leave the leaf on the plant to continue what leaves on plants do, manufacture nutrients to feed the plant.