Preheat oven to 350°F. Prepare a sheet pan with parchment paper. Place sweet potato cubes on and add ¼ cup olive oil, the garlic powder, zaatar and 1 teaspoon of salt. Place in oven for 40 minutes. Remove and place in salad serving bowl.
Add lettuce, dried cherries, pears and scallions.
In a separate jar, add the remaining ¼ cup of olive oil, balsamic vinegar, mustard, brown sugar and 1 teaspoon of salt. Shake well and add right before serving.
Add Roquefort cheese to this dish for a restaurant flavor!