Tortoise beetle -- same as this one https://www.helpfulgardener.com/forum/vi ... 2&p=360027
...I picked one off of a potato plant leaf today
Pepper white area is probably sun scald.
The tomatoes look like they were exposed to too cold temperature -- multiple days of low 40's or below, resulting in lowered metabolism and phosphorous deficiency. I have heard that giving them a weak epsom salt solution will help to green them up... But I can't rmember if it was foliar spray or soil drench -- leaning towards soil drench.... And the amount.... I'll look up my notes, but someone else may already know and post.
If it's still gets cold where you are, be sure to cover them at night. Too much of this and they will shut down and take a long time to recover. I have seedlings that were exposed to extreme cold around early to mid March that are FINALLY starting to come back to life and looking like they might make something of themselves.