Place the vegetables In a bowl, and sprinkle with salt (about 1/4 teaspoon for each vegetable). Let sit for about 20 minutes until wilted and some liquid has been released. Flip them over half way through. Discard the liquid.
Preheat a lightly oiled grill or grill pan over medium high heat. You can also use a large skillet. Grill the vegetable slices, for about two minutes per side, until cooked through and slightly charred with nice grill marks.