Preheat oven to 400º F. Place sweet potato cubes and pepper rings on a baking sheet and drizzle olive oil on them. Bake in the oven for 20 minutes, remove and let cool slightly.
Lay the tortillas on a cutting board. Divide the sweet potato cubes among the wraps and use the back of a fork to squash them down gently. Arrange the shredded turkey over the top, then divide the peppers and half the cheese among the wraps. Roll up each wrap tightly and arrange in a small baking dish. Sprinkle remaining cheese over all the wraps and bake for 12-15 minutes.
In a small bowl, mix the tomatoes with the chipotle past, lime zest and juice. When the cheese has melted, serve with the tomato sauce, sour cream and cilantro.