Prepare the dressing by whisking together the Greek yogurt, mayonnaise, minced chipotle peppers, lime juice, and garlic powder in a small bowl until smooth.
In a large mixing bowl, combine the romaine lettuce, black beans, sweet corn, cherry tomatoes, and red onion.
Drizzle the dressing over the salad components and toss gently to ensure even distribution.
Divide the salad into two bowls.
Top each serving with avocado slices, fresh cilantro, and tortilla strips immediately before serving to maintain texture.