Dressing:Â Stir together lime zest, lime juice, vinegar, honey, mustard, chili powder, cumin, garlic, salt and pepper. Slowly whisk in oil until combined. Set aside.
Salad:Â Place eggs in small saucepan; pour in enough cold water to cover eggs by 1 inch (2.5 cm). Set over high heat; bring to boil. Cover and remove from heat. Let stand for 5 minutes. Drain and place under cold running water until easy enough to handle. Peel carefully.
Meanwhile, preheat broiler to high. Whisk oil with chili powder; brush lightly over both sides of each tortilla. Broil for 3 to 5 minutes per side or until crisp and lightly browned. Let cool completely.
Place two tortillas on each of four dinner plates. Divide mixed greens evenly over tortillas. Top with black beans, onion, tomato, cheese and avocado. Cut each egg in half and arrange over salad. Drizzle with vinaigrette. Serve immediately.