Heat olive oil in a large pot over medium heat. Add bacon and cook until crisp, 5–7 minutes.
Stir in onion, celery, and carrots. Cook until softened, 6–8 minutes, stirring occasionally.
Add garlic and cook 30 seconds. Stir in tomato paste and cook 1 minute to caramelize.
Sprinkle in thyme, oregano, red pepper flakes, and ground bay leaf. Toast the spices for 30 seconds.
Pour in diced tomatoes, clam juice, and broth. Scrape up any browned bits from the pot.
Add potatoes. Bring to a gentle boil, then reduce to a simmer and cook until tender, 15–20 minutes.
Stir in clams with their juices. Simmer just 2–3 minutes to warm through without toughening.
Season with Worcestershire, hot sauce, salt, and pepper. Fold in parsley and let rest 5 minutes before serving.