Add sweet potatoes and chickpeas to a sheet pan lined with parchment paper. Coat with oil, za'atar, salt and pepper. Bake for 30-35 minutes until sweet potatoes are cooked through and chickpeas are crisp.
Add all yogurt sauce ingredients to a bowl and mix until smooth.
Add sweet potatoes to a plate and top with chickpeas. Drizzle over yogurt sauce. Top with hummus, arugula and feta. Dig in.
Notes
This makes 2-3 servings Chickpeas and sweet potatoes.