Blend sour cream, tomatoes, cilantro, yogurt, and pepper.
Refrigerate for 1 to 2 hours.
Add oil to a large skillet and heat over medium-high heat.
Add turkey and cook for about 7 to 10 minutes; Drain fat.
Stir in chili powder, coriander, cumin, garlic powder, oregano and cayenne pepper.
Add the beans, tomatoes, and water.
Bring to a boil; reduce heat and simmer uncovered for 10 minutes.
Layer greens, chili meat, green pepper, and onions onto each plate.
Drizzle with chilled dressing.
Serve.
Meanwhile, blend sour cream, tomatoes, cilantro, yogurt, and pepper.
Refrigerate for 1 to 2 hours.