Cook bacon in a skillet or 400°F oven until crisp, 12–15 minutes. Drain on paper towels and cool.
Chop the chicken, tomatoes, romaine, celery, green onions, and parsley. Set aside.
Whisk mayonnaise, Greek yogurt, lemon juice, Dijon, garlic powder, salt, and pepper in a large bowl.
Fold in the chicken until coated with the dressing.
Stir in celery, green onions, and tomatoes. Mix gently to keep tomatoes intact.
Add the crumbled bacon and romaine just before serving. Toss lightly and sprinkle with parsley.
Chill 10–15 minutes for flavors to meld, if time allows. Serve as desired.
Notes
Variation: Add diced avocado or swap half the mayo for more yogurt. Serve on toasted sourdough, in lettuce cups, or over greens. For best crunch, fold in the romaine and bacon right before serving. Store the dressed chicken mixture (without lettuce and bacon) up to 3 days; add the crisp elements just before eating.This recipe is an original creation inspired by classic BLT Chicken Salad Recipes flavors. All ingredient ratios and instructions are independently developed.