Preheat your oven to 400°F (200°C).
Cut the spaghetti squash in half lengthwise and scoop out the seeds.
Drizzle olive oil over the cut sides and sprinkle with salt and pepper.
Place the squash cut-side down on a baking sheet.
Roast in the oven for 30-40 minutes until tender.
While the squash cooks, heat olive oil in a pan over medium heat.
Add minced garlic and sauté until fragrant.
Stir in zucchini and bell pepper, cooking until tender.
Add cherry tomatoes and cook until they soften.
Once the squash is done, use a fork to scrape the flesh into strands and combine with the sautéed vegetables.