Step 1

Place racks in upper and lower thirds of the oven and preheat oven to 400 degrees F.

Step 2

Scrub the sweet potato and cut into 1/2-inch cubes and the cauliflower into florets. Place them on the first sheet pan and drizzle with 1 1/2 tablespoons oil.

Step 3

Cut the zucchini into 1/2-inch cubes and the red onion into 1/2-inch slices. Place on the second sheet pan and drizzle with 1 1/2 tablespoons oil.

Step 4

Sprinkle each sheet pan with 1/2 teaspoon salt and 1/4 teaspoon black pepper. Toss to coat, then spread the vegetables into an even layer. Place in oven and roast for 10 minutes. Remove the pans from the oven, then with a spatula toss the vegetables to promote even cooking. Spread back into an even layer, rotate the pans' positions, then continue baking until the vegetables are crisp-tender about 10 to 15 additional minutes.

Step 5

While the vegetables roast, prepare the dressing: in a small bowl or large liquid measuring cup, whisk together the dressing ingredients: olive oil, vinegar, garlic, oregano, mustard, salt, and pepper.

Step 6

Once the vegetables have finished roasting, scrape them into a large serving bowl. Add the chickpeas. While the vegetables are still warm, pour the dressing over the top and toss gently to coat.

Step 7

Gently stir in the feta and parsley. Enjoy with pita, couscous, or quinoa as desired.