Prepare the chicken by marinating it in olive oil, salt, and pepper.
Grill or pan-sear the chicken until cooked through and golden brown.
While the chicken is cooking, prepare the salad ingredients by chopping the romaine, slicing cucumbers, and halving the cherry tomatoes.
Once the chicken is cooked, let it rest for a few minutes before slicing.
In a large bowl, combine the romaine, tomatoes, cucumbers, and croutons.
Add the sliced chicken and shredded Parmesan to the salad.
Drizzle with Caesar dressing and toss gently to combine all ingredients.
Serve immediately, garnished with additional croutons and cheese if desired.