Roasted Vegan Veggie Pasta

Ingredients

• 1 (16-ounce) box pasta, such as penne
• 1/2 large red onion, sliced
• 2 medium carrots, cut into thin matchsticks
• 1 pint cherry tomatoes, halved
• 1 medium zucchini, cut into thin matchsticks
• 1 pound eggplant, skin-on, cut into cubes
• 1/4 teaspoon salt, plus more, to taste
• 2 1/2 tablespoons fresh thyme leaves, chopped
• 3 cloves garlic, minced
• 2 tablespoons lemon juice
• 3 tablespoons balsamic vinegar
• 1/2 teaspoon red pepper flakes, optional
• black pepper, to taste