Preheat the oven to 400 degrees F.
In a small bowl combine the rosemary, thyme, oregano, garlic powder, red pepper flakes, salt and pepper.
On one sheet pan, toss the zucchini, squash and eggplant with 1 tablespoon olive oil and half the dried seasoning mix. Spread into a single layer.
On another sheet pan, toss the tomatoes, peppers and red onions with 1 tablespoon olive oil and the rest of the dried seasoning mix. Spread into a single layer.
Roast the vegetables for 30-35 minutes until the zucchini, squash and eggplant are lightly browned, the tomatoes and peppers are slightly wrinkled and the onions are translucent. Rotate the pans halfway through roasting. (If the vegetables on one pan are done before the other, then take that pan out of the oven.)
While the vegetables are roasting, make the quinoa on the stove. Combine the quinoa and water in a small saucepan over high heat. Bring to a boil, reduce the heat and simmer for 10-12 minutes until the grains are cooked. Let stand for 5 minutes before fluffing with a fork.
In a large bowl, stir together the roasted vegetables, quinoa and basil.