Place all cut veggies on a large cooking sheet pan. *Tip- Spread your veggies out thinly on a baking sheet (use more than one baking sheet if needed) so that they roast and not steam in the oven.
Drizzle the rainbow array of vegetables with extra virgin olive oil. And gently toss to cover all pieces with oil.
Season the sheet tray of vegetables with coarse kosher salt and ground black pepper.
Place in preheated oven and roast for about 25 minutes turning midway through
Remove from oven and serve this roasted vegetable platter seasoned with additional salt and pepper if needed.