Disease?

I don't know what's going on. My tomato plants have spots on many of the leaves. Then the leaves yellow, wither and die.

It is very sad.

I went out and cut off all the yellow leaves. I really hope this doesn't affect the fruit.

Also, my crazy pepper is getting huge!!! It is twice as long as it was in the last photo I posted.

Last thing, I'm pretty sure now that my runt tomato plant is NOT a cherry tomato plant. The fruit are bigger and a different color pattern than the other cherry tomatoes.