Pat the chicken dry and cut it into strips or small cutlets.
In a shallow bowl, mix panko breadcrumbs, parmesan, garlic powder, onion powder, salt, and black pepper.
In another bowl, whisk the egg with milk.
Dip each chicken piece into the egg mixture, then coat with the breadcrumb mixture. Press gently so the coating sticks.
Heat olive oil in a skillet over medium heat.
Cook the chicken for 4–5 minutes per side, or until golden, crispy, and cooked through.
Transfer the chicken to a cutting board and rest for 5 minutes. Slice into bite-size pieces.
In a bowl, toss chopped romaine with Caesar dressing, lemon juice, parmesan, bacon bits, and crushed croutons.
Arrange whole romaine leaves on a plate.
Spoon the Caesar mixture into each lettuce leaf.
Top with crispy chicken, extra parmesan, black pepper, and a small drizzle of Caesar dressing.
Serve immediately.