Preheat oven to 400°F (200°C).
Slice the spaghetti squash in half lengthwise. Scoop out the seeds with a spoon.
Season the inside of each squash half with 2 tbsp olive oil (1 tbsp each) and then sprinkle with salt, pepper and fresh garlic.
Place the squash halves cut-side down on a baking sheet lined with parchment paper. Place in the oven for about 40 minutes, or until the flesh easily shreds into noodles with a fork.
Make your spaghetti using a fork to scrape the squash into shreds.
Toss the spaghetti squash strands with the remaining additional olive oil and garnish with fresh chives and a generous sprinkle of Parmesan cheese (optional if making vegan).
