Cut the vegetables into similar sized pieces, and then toss them together in a large mixing bowl with the olive oil, spices, and fresh thyme.
Spread the vegetables into a single layer on a baking sheet. You may need two baking sheets depending on their size.
Roast at 425 degrees on the middle rack of your oven for 20 minutes.
Notes
I chose to use a rainbow of veggies: tomato, orange bell peppers, yellow squash, zucchini, and red onion. Feel free to swap these out with some of YOUR favorites, such as mushrooms, carrot, fennel, or eggplant.
You can substitute 1 teaspoon dried thyme for the fresh thyme.
Leftover vegetables can be stored in an airtight container in your refrigerator for up to 3 days.