Preheat the oven to 400ºF.
Wash and dry the sweet potatoes. Cut them in half lengthwise and place them on the parchment lined baking sheet.
Drain the liquid from the can, then rinse the chickpeas and dry them with a paper towel.
Lay them out on the same baking sheet as the sweet potatoes.
Drizzle the sweet potatoes and chickpeas generously with olive oil, then sprinkle with the cumin, paprika, coriander, sumac, za'atar, salt, and pepper.
Rub the oil and spices in, then lay the sweet potatoes out cut side down (skin side up).
Roast for 35-40 minutes, until the sweet potatoes are completely soft when poked with a fork and the chickpeas are crispy.
Remove from the oven and let cool for 10 minutes. Prepare the other components.
Make the hummus sauce by combining the hummus, lemon juice, and a pinch of salt. Add water as needed to achieve a drizzling consistency.
Roughly dice the tomatoes, scallions, and parsley.
Flip the sweet potato halves so they look like boats. Roughly fluff the insides with a fork.
Top with the crispy chickpeas, tomatoes, scallions, and feta. Drizzle with the hummus sauce. Sprinkle on parsley. Enjoy!