Place the sweet potatoes on the prepared baking sheet and drizzle with 1 tablespoon of olive oil and sprinkle with ½ teaspoon of the kosher salt. Toss until well combined and spread the potatoes into a single layer. Transfer to the oven and roast until the sweet potatoes are tender and begin to get golden brown on the edges, about 15 minutes.
Remove from the oven and push the potatoes to the edges of the baking sheet. In a medium bowl, toss the broccoli, 1 tablespoon of olive oil and ½ teaspoon kosher salt until well combed. Add around the baking sheet with the potatoes, making space in the center for the salmon filets.
Add the salmon filets to the center of the baking sheet and brush the flesh with the remaining tablespoon of the olive oil. Season with the za’atar seasoning. Transfer to the oven and bake until the salmon is cooked through and flakes easily with a fork, 12 to 15 more minutes.
Divide amongst four plates and serve with the creamy zhoug sauce and enjoy!