Preheat oven to 400 degrees, line baking sheet with parchment paper. Toss sweet potatoes with chipotle pepper, salt and olive oil. Roast in a single layer 20-25 mins, cool. Cook onion, garlic, peppers and spices in dutch oven 5 mins. Pour tomatoes and water in, simmer for 30 mins. Add remaining ingredients and roasted sweet potatoes.