Preheat oven to 450F.
Line a large (I am using a 16" x 21") baking sheet with parchment paper. Set aside.
Combine the dressing ingredients in a large bowl, then whisk well, breaking Feta into small pieces.
Add roasted vegetables to the bowl, one kind at a time, and smother with the dressing.
Arrange the vegetables on the baking sheet, making sure that the vegetables of the same kind are grouped together.
Scrape any remaining dressing from the bowl and sprinkle evenly over the vegetables.
Sprinkle some salt and pepper to taste. Remember that Feta already has salt in it, some brands more then others.
Bake on the top rack for 30-35 minutes, or until the vegetables are soft and cooked through.
Remove vegetables from the oven and serve immediately. Squeeze the juice/pulp from roasted lemon wedges over the vegetables.