Combine oregano, thyme, bay leaf, garlic powder, onion powder, red pepper flakes, cayenne, sugar, paprika, salt, and pepper in a bowl.
In a large pot, melt butter and add oil. Sauté onion, garlic, celery, and bell pepper until softened.
Add tomato paste and cook for 2 minutes. Stir in the spice mixture.
Gradually add stock, stirring constantly. Bring to a boil, then reduce heat and simmer for 30 minutes.
Add okra and simmer for 15 minutes.
Add scallops, shrimp, and crab meat. Cook until seafood is cooked through, about 5-7 minutes.
Serve hot.