Remove meat from refrigerator 30 minutes before cooking. Spray fillets with oil and season to taste. Heat a chargrill plate over medium-high heat and cook fillets until done to your liking. Remove from heat, cover loosely with foil and rest for 5 minutes.
Meanwhile, to make dressing, combine 2 tablespoons Prodivore d'Italia Pesto, olive oil, lemon zest and juice in a bowl and whisk to combine. Season to taste. Combine salad ingredients in a large bowl, add dressing and toss well to combine.
Serve steaks topped with remaining Prodivore d'Italia Pesto. Serve with salad.
Substitute Providore Series Italian Tomatoes and Grana Padano Cheese Pesto, if desired.