That tomato is sunburned! It could be from soap? what kind did you use and what time of day? You really need to pick your tomato fruit as soon as it begins changing to blush color, don't wait till red or you won't harvest any nice ones. Your squash is growing pretty normal, the wilting could be from heat or squash vine borer, wich would be bad news. Pumpkins looking great! Those peppers look great! What are you spraying your tomatoes with? High salt tolerance veggies, tomatoes, sweet peppers,spinach, kale, beets, cabbage and broccoli. Loquat even could do well! Great work my friend! Can't wait to see how the sweet potatoes take over!!!