Spanakopita Stuffed Peppers

Name: Spanakopita Stuffed Peppers
Ingredients: 2 tablespoons extra-virgin olive oil, divided; ¼ cup chopped shallot; 1 (11 ounce) package baby spinach; 2 teaspoons chopped fresh dill; 2 teaspoons chopped fresh parsley; 1 clove garlic, grated; ¼ teaspoon ground pepper; ½ cup part-skim ricotta cheese; 6 tablespoons crumbled feta cheese; 2 red bell peppers (about 8 ounces each), cut in half lengthwise and seeded; ¼ teaspoon salt; 4 tablespoons shredded part-skim low-moisture mozzarella cheese, divided