Grilled Vegetable Pizza

Name: Grilled Vegetable Pizza
Ingredients: 1 small Chinese eggplant (sliced); 1 zucchini (sliced); 4 medium cremini mushrooms (trimmed and sliced); 1 small red bell pepper (quartered and seeded); 1/2 small red onion (thinly sliced); 1/2 cup cherry tomatoes (halved); 3 tablespoons olive oil (divided); 1/2 teaspoon Herbes de Provence; 1/2 teaspoon kosher salt; 1/4 teaspoon freshly ground black pepper; 1 lb pizza dough; 1 cup pesto; 1/2 cup smoked gouda; 2 jarred artichoke hearts (halved); fresh basil (torn); red pepper flakes (optional, for serving)