In a small bowl, whisk together ½ cup olive oil, ⅓ cup soy sauce, ⅓ cup lemon juice, ¼ cup Worcestershire sauce, 1 tablespoon minced garlic, 2 tablespoons Italian seasoning, 1 teaspoon pepper, ½ teaspoon salt, and a pinch of red pepper flakes.
Add the 2 pounds skirt steak to a resealable zip lock bag or large bowl and pour the marinade on top. Marinate for 2 hours or overnight before cooking the steaks.
Notes
Make Ahead: Make the marinade up to 3 days in advance. Once you add it to the steak, make sure to cook it within 24 hours of it marinating. Throw away any leftover marinade from the bag the steak was marinating in.