01 - Preheat oven to 375°F. Lightly grease a baking dish large enough to hold all pepper halves in a single layer.
02 - Arrange bell pepper halves cut side up in the prepared dish. Drizzle with olive oil and season lightly with salt and pepper.
03 - In a large mixing bowl, combine ricotta, Parmesan, mozzarella, egg, basil, parsley, chives, garlic, lemon zest, kosher salt, and black pepper. Stir until smooth and evenly blended.
04 - Spoon the ricotta mixture evenly into each pepper half, distributing the filling generously and smoothing the tops.
05 - Cover the baking dish tightly with aluminum foil and bake for 25 minutes until the peppers begin to soften.
06 - Remove the foil and continue baking for 10 more minutes, or until the filling is set and the tops are lightly golden. Let cool slightly, garnish with fresh herbs, and serve warm.