Preheat the oven to 400°F (200°C) to ensure a high-heat environment for crisping.
Apply a uniform layer of olive oil to the surface of the flatbreads and season with garlic powder.
Position flatbreads on a perforated baking sheet or pizza stone and heat for 7 minutes until the edges reach a golden-brown state.
Combine sliced chicken breast with one tablespoon of Caesar dressing and black pepper in a stainless steel mixing bowl.
In a separate vessel, emulsify the romaine lettuce with the remaining Caesar dressing until leaves are fully coated.
Transfer the baked flatbreads to a clean preparation surface and distribute the seasoned chicken across the top.
Layer the dressed romaine lettuce over the chicken substrate.
Finish the assembly by distributing shaved Parmesan cheese over the surface.
Divide into uniform segments using a pizza cutter and serve immediately to prevent lettuce wilting from residual heat.