Preheat the oven to 425F. Line a baking sheet with parchment paper.
To the baking sheet, add the sweet potatoes, chickpeas, olive oil, 1 teaspoon salt, cumin, cinnamon, and red pepper flakes (if using). Use your hands to toss to coat thoroughly. Spread out into an even layer and bake for 15 minutes.
Remove from the oven, give it a stir, spread back out into an even layer, and bake for 10 more minutes or until the sweet potatoes are cooked through and beginning to brown in spots.
Meanwhile, in a large bowl, add the cabbage, a drizzle of olive oil, and the remaining ¼ teaspoon salt. Use your hands to massage the salt into the cabbage until the cabbage wilts down and softens, about 1 minute.
In a jar with a lid, add all of the dressing ingredients and shake vigorously until combined and smooth.
To the large bowl, add the sweet potatoes/chickpeas, parsley, and ⅔-¾ of the dressing. Toss to coat well.
Serve the salad topped with apples, nuts, cheese, and drizzle the remaining dressing over top.