Spaghetti Squash Primavera

Ingredients

• 1 spaghetti squash (about 3 pounds), halved and seeded
• 2 tablespoons olive oil, divided
• 1/2 teaspoon salt, divided, plus more to taste
• 1/4 teaspoon black pepper, divided, plus more to taste
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 1 zucchini, halved and sliced into half-moons
• 1 carrot, julienned
• 1 cup cherry tomatoes, halved
• 1/2 cup frozen peas, thawed
• 4 cloves garlic, minced
• 1/4 teaspoon red pepper flakes
• 1/2 cup grated parmesan cheese
• 2 tablespoons fresh basil, thinly sliced
• 1 tablespoon fresh lemon juice