Roasted Vegetable Terrine

Name: Roasted Vegetable Terrine
Ingredients: 1 large red bell pepper; 1 large yellow bell pepper; ½ cup olive oil, plus more for brushing vegetables; 1 small eggplant, cut lengthwise into 14 slices; 1 large zucchini, cut lengthwise into 14 slices; 1 large yellow squash, cut lengthwise into 14 slices; Kosher salt and freshly ground black pepper, to taste; 2 lb. fresh spinach; 4 oz. soft goat cheese, softened; ⅓ cup minced basil; 2 tbsp. minced oregano; 2 tbsp. minced parsley; 1 tbsp. minced thyme; ½ tsp. crushed red chile flakes; 1 cup sun-dried tomatoes; 2 cloves garlic; 1 cup walnuts; ½ cup grated Parmesan; 2 tbsp. balsamic vinegar