Shrimp Pesto Pasta

Bahan-bahan (4 porsi)

• 12 ounces spaghetti (or other long pasta)
• 1 pound medium shrimp (peeled and deveined)
• ½ teaspoon dried oregano
• ½ teaspoon salt
• ¼ teaspoon black pepper
• 2 tablespoons olive oil (divided)
• 1 pint grape tomatoes
• ¾ cup pesto (homemade or store-bought)
• ¼ cup grated Parmesan cheese
• fresh basil (and lemon wedges, optional)