01 - Cook bacon in large skillet over medium heat until crispy, 6–8 minutes. Drain on paper towels and crumble once cool.
02 - Season chicken breasts with salt and pepper. In same skillet, cook chicken over medium heat for 6–8 minutes per side until fully cooked. Let rest 5 minutes, then slice thinly.
03 - In small bowl, whisk together mayonnaise, Greek yogurt, lemon juice, Dijon mustard, salt, and pepper until smooth.
04 - In large salad bowl, combine romaine lettuce, cherry tomatoes, avocado, and red onion.
05 - Add sliced chicken and crumbled bacon to the salad bowl.
06 - Drizzle dressing over salad and toss gently to evenly coat all ingredients.
07 - Garnish with chopped chives or parsley if desired. Serve immediately.