Spicy Stuffed Tomatoes

Name: Spicy Stuffed Tomatoes
Ingredients: 2 tablespoons olive oil, plus more for greasing the pan; 8 medium globe tomatoes; Salt to taste; 1/2 cup shelled unsalted (raw) pistachios; 1 medium yellow onion, halved and thinly sliced; 3 to 4 garlic cloves, minced; 1 teaspoon dried thyme; 1/4 teaspoon crushed red chile flakes, or to taste; 1 pound zucchini (about 3 medium), coarsely grated; 1/2 cup chopped fresh parsley, divided