For a quick, easy, and delicious meal, make this salad for supper in under 30 minutes.
Heat a grill or grill pan to high. Clean and lightly oil hot grill. Season chicken cutlets with salt and pepper. Grill chicken until cooked through, 1 to 2 minutes per side, flipping once. Transfer to a cutting board and let rest 5 minutes before cutting crosswise into strips.
In a large bowl, whisk together lemon juice and olive oil; season with salt and pepper. Add chicken, spinach, tomatoes, feta, and corn; toss to combine.