In a bowl, combine 1 tsp red pepper powder, 2 tbsp olive oil, salt, and black pepper. Add the chicken breasts, ensuring they are well coated. Let them marinate for at least 15 minutes. Heat a pan over medium heat. Add the marinated chicken and cook until golden brown on both sides and cooked through. Remove from heat and let it rest before slicing.
In a blender, combine 1 cup spinach, 1/4 cup parsley, lemon juice, 1/3 cup olive oil, 2 pressed garlic cloves, 1/4 cup water, and 1/4 cup Parmesan. Blend until smooth. Adjust seasoning if needed.
Preheat your oven to 350°F (175°C). Cut the bread into small cubes. In a bowl, mix bread cubes with 2 tbsp olive oil, salt, black pepper, 1 pressed garlic clove, 2 tbsp Parmesan, and 1 tsp red pepper powder. Spread on a baking sheet and bake until golden brown, about 10-15 minutes.
In a large bowl, combine sliced lettuce, cucumber, tomatoes, red onion, and green olives. Add the sliced grilled chicken and baked bread crumbs.
Drizzle the green salad dressing over the salad, toss gently to combine, and serve immediately.