Season chicken breasts with salt, pepper, and a drizzle of olive oil. Grill for 5–6 minutes per side until golden and fully cooked. Let rest, then slice.
In a large bowl, combine lettuce, cherry tomatoes, cucumber, red onion, and croutons.
In a small bowl, whisk together olive oil, lemon juice, Dijon mustard, honey, salt, and pepper to create the dressing.
Add the sliced chicken to the salad bowl, drizzle the dressing on top, and toss gently to combine.
Garnish with grated Parmesan cheese and serve immediately while the chicken is warm.
Notes
Try adding avocado slices, boiled eggs, or roasted nuts for extra texture and nutrition. This salad also works great with a creamy yogurt-based dressing.