Preheat the oven to 4100F.
Cut the spaghetti squash in half and remove seeds.
In a bowl, mix olive oil, lemon pepper, black pepper, and salt.
Rub the mixture on the cut surface of spaghetti squash and place each half with the face side down on a baking tray.
Bake the spaghetti squash for 35 minutes. Keep an eye on them. Towards the end, cover them with a foil to avoid the skin from browning.
Remove from the oven. Let cool for 5 minutes and remove the spaghetti squash strands with a fork. Put aside.
In a food processor, add walnuts, grated parmesan cheese, garlic cloves, spring greens, cilantro, mint, lemon juice, and olive oil. Pulse until a smooth pesto is formed.
In large bowl mix ½ cup pesto with 1 cup of spaghetti squash until evenly coated.
Serve your pesto spaghetti squash on plates or inside the quash shells with a sprinkle of parmesan cheese.