Creating Tuscan Chicken and Spaghetti Squash is straightforward if you follow these steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Prepare Spaghetti Squash: Cut the spaghetti squash in half lengthwise. Scoop out the seeds and drizzle with olive oil, salt, and pepper. Place cut-side down on a baking sheet and roast in the oven for about 30-35 minutes, or until tender.
3. Cook Chicken: In a large skillet, heat olive oil over medium heat. Season chicken breasts with salt, pepper, and Italian seasoning. Cook the chicken for about 6-7 minutes on each side until golden brown and cooked through. Remove from skillet and set aside.
4. Sauté Garlic and Vegetables: In the same skillet, add minced garlic and cherry tomatoes. Sauté for about 2-3 minutes until the tomatoes start to soften. Add fresh spinach and cook until wilted.
5. Add Broth: Pour the vegetable or chicken broth into the skillet. Stir well to combine and allow the mixture to simmer for 5 minutes. Season with red pepper flakes for a little heat, if desired.
6. Combine Chicken and Sauce: Slice the cooked chicken and return it to the skillet, mixing it with the sauce for a few minutes to heat through.
7. Prepare Spaghetti Squash: Once the spaghetti squash is cooked, carefully flip it over and use a fork to scrape out the strands into a bowl.
8. Serve: Plate the spaghetti squash and top it with the Tuscan chicken mixture. Sprinkle with freshly grated Parmesan cheese and garnish with fresh basil leaves if desired.

By following these steps, you will create a beautiful and delicious meal that embodies the flavors of Tuscany.