Shrimp and Veggie Packets

Name: Shrimp and Veggie Packets
Ingredients: 4 mixed color mini bell peppers, or 1 Carmen pepper, seeded and sliced into thin rings; 2 celery ribs, thinly sliced on the bias; 1 leek, halved lengthwise and soaked in cold water to remove grit, then sliced into thick half-moons; 1 large shallot, thinly sliced; 2 tablespoons olive oil, plus extra to drizzle; Kosher salt; Freshly ground black pepper; 1 1/2 pounds large peeled and deveined shrimp; 4 sprigs fresh thyme; 1 1/2 teaspoons herbs de Provence; 4 thin lemon rounds; 4 teaspoons dry white wine or water; 1/4 cup fresh parsley leaves, chopped