Toss carrots in a bowl with olive oil, salt and pepper, (If you don't have leftover sweet potatoes you may toss two peeled and cubed sweet potatoes along with the carrots) Then roast on parchment lined baking sheet for 20 minutes.
Toss kale and onion in a salad bowl. Add turkey, potatoes and carrots.Toss again.
For dressing: Whisk dressing in a separate bowl. Pour over salad. Toss and serve at room temperature