Prepare the Croutons: Preheat the oven to 375°F (190°C). Arrange the ciabatta slices on a baking sheet, drizzle with olive oil (optional), and toast for 10 minutes or until golden and crisp. Set aside to cool.
Cook the Chicken: Season the chicken fillets with garlic powder, parsley flakes, and a pinch of salt. In a skillet over medium heat, cook the chicken for 4–5 minutes on each side until golden and cooked through.
Cook the Bacon: In the same skillet, cook the bacon strips until crisp. Move to a plate lined with paper towels to absorb any excess oil.
Prepare the Dressing: In a bowl, mix Greek yogurt, olive oil, crushed garlic, chopped anchovies (or olives and fish sauce if using), lemon juice, grated parmesan, and season with salt and pepper. Stir until well combined.
Assemble the Salad: In a large bowl or on a serving platter, arrange the lettuce leaves, sliced chicken, bacon, boiled eggs, and avocado. Add the toasted ciabatta croutons and sprinkle with shaved parmesan.
Dress and Serve: Drizzle the dressing over the salad just before serving, tossing lightly to combine. Enjoy!