Rinse the quinoa under cold water to remove any bitterness. In a medium saucepan, combine 1 cup of quinoa with 2 cups of water. Bring to a boil, then reduce the heat to low, cover, and simmer for about 15 minutes, or until the quinoa is fluffy and all the water is absorbed. Remove from heat and let it cool.
While the quinoa is cooking, grate the carrots if you're not using pre-grated ones. Rinse and drain the chickpeas, and chop the fresh mint.
In a large mixing bowl, combine the cooked quinoa, chickpeas, grated carrots, baby arugula, toasted nuts or seeds, crumbled feta (if using), golden raisins or dates, and chopped mint.
In a small bowl, whisk together the olive oil, lemon juice, Dijon mustard, maple syrup or honey, chili powder, kosher salt, and ground cinnamon until well combined.
Pour the dressing over the salad and toss gently until everything is evenly coated. Taste and adjust seasoning if needed.
Serve immediately or let it chill in the refrigerator for a bit to allow the flavors to meld.