Preheat the grill to medium-high heat.
Season the chicken breasts with salt, pepper, and olive oil.
Grill the chicken for about 6-7 minutes on each side until cooked through.
Remove chicken from the grill and let it rest for 5 minutes.
Slice the grilled chicken into strips.
In a large mixing bowl, combine chopped romaine lettuce and croutons.
Drizzle Caesar dressing over the lettuce and toss gently to coat.
Add sliced chicken on top of the salad.
Sprinkle grated Parmesan cheese over the salad.
Serve immediately, garnished with extra croutons if desired.