Preheat a grill or grill pan
In a mixing bowl combine the olive oil, balsamic vinegar
, herbs, garlic, salt and pepper and whisk
to combine. Lightly brush the zucchini slices on both sides with the olive oil mixture. Place the zucchini slices on the grill and cook for 3 to 4 minutes per side, or until the slices are crisp-tender with nicely browned grill marks. Transfer to a serving platter and sprinkle with the kosher salt, if using. Repeat with the remaining vegetables, fitting as many on your grill as possible, and cooking until crisp
, if desired. Serve hot or warm.