That's the resolution of the pictures straight off of your camera (2592x1936). Never used image editing software..huh?
They look pretty stressed. The leaves are cupping and look very small like the plants are stunted. The leaf color is pale like you said in the beginning.
I don't see how anything you've done so far with fertilizing would have anything to do with those symptoms.
Possibilities that I could think of are:
Tomato Yellow Leaf Curl Virus (TYLCV)
Traces of Herbicide in the soil (but I don't see your pepper leaves cupping)
Serious insect or mite infestation
Something seriously wrong in the soil, PH is way off? Roots are drowning in water, not getting enough Oxygen? Root pathogens?