2 lbs Top Sirloin or Ribeye steak, cut into 1.5-inch cubes; 2 large bell peppers (one red, one green), cut into chunks; 1 large red onion, cut into chunks; 8 oz whole white or cremini mushrooms; 1 large zucchini, sliced into thick rounds; 1/4 cup olive oil; 1/4 cup soy sauce (or coconut aminos); 2 tablespoons Worcestershire sauce; 1 tablespoon lemon juice; 3 cloves garlic, minced; 1 teaspoon dried oregano; 1/2 teaspoon black pepper; Wooden or metal skewers