Preheat oven to 425 degrees. Peel sweet potato and dice into small cubes. Place on a baking sheet and toss with 1 tablespoon of olive oil and a few sprinkles of salt and pepper. Place in preheated oven and cook until tender, about 20 minutes. Meanwhile, cook quinoa according to package instructions and season with a pinch of salt. Let both cool to room temperature before using.
Split greens into two large bowls or plates. Top each with goat cheese, cranberries, pepitas, and sliced chicken. Finish each salad with about ⅓ cup of toasted sweet potatoes and ⅓ cup of cooked quinoa.
In a small bowl, whisk together the dressing ingredients. Drizzle dressing over each salad and serve immediately.