Season chicken breasts evenly with garlic powder, salt, and black pepper.
Heat olive oil in a skillet over medium-high heat.
Cook chicken for 6 to 7 minutes per side, or until internal temperature reaches 165 degrees Fahrenheit.
Remove chicken from heat and allow to rest for 5 minutes before slicing into thin strips.
In a mixing bowl, combine the sliced chicken, Caesar dressing, and shredded Parmesan cheese until well coated.
Slice ciabatta rolls in half and toast until lightly golden.
Layer the bottom half of each roll with chopped romaine lettuce.
Distribute the dressed chicken mixture evenly over the lettuce on all four rolls.
Sprinkle crushed croutons over the chicken for added texture.
Close the sandwiches with the top half of the rolls and serve immediately.