Step 1: Preheat your oven to 400°F (200°C) and line a sturdy baking sheet with parchment paper.
Step 2: Wash and thoroughly scrub the sweet potatoes under cold running water, then pat them completely dry with a clean towel. Pierce each potato 6 to 8 times with a sharp fork to allow steam to escape safely.
Step 3: Rub the outside of each potato with 1 tablespoon of the extra virgin olive oil and a generous pinch of sea salt. Place them on the prepared baking sheet and roast for 45 to 55 minutes until the center is completely tender when poked with a knife.
Step 4: While the potatoes are baking, combine the ricotta cheese, the remaining 1 tablespoon of olive oil, dried oregano, garlic powder, lemon zest, salt, and black pepper in a medium mixing bowl. Whip vigorously with a spoon or whisk for 1 minute until light, smooth, and fluffy.
Step 5: Remove the potatoes from the oven. Cut a deep slit down the length of each warm potato, being careful not to cut all the way through the bottom skin. Gently press the ends inward to open up a wide pocket, and fluff the inner orange flesh lightly with a fork.
Step 6: Spoon the whipped herb ricotta filling generously into each potato pocket. Top with the halved cherry tomatoes, toasted nuts, and fresh chopped basil and parsley. Serve warm with an optional final drizzle of olive oil.