Preheat oven to 425°F. Grease a 2-quart baking dish. Heat 1½ tablespoons olive oil in large skillet over medium heat. Add onion and peppers. Cook, stirring occasionally, 8 minutes. Add tomatoes, olives, capers, anchovy paste (optional), oregano, paprika and sugar. Cook for 4 minutes, or until vegetables are almost tender. Stir in vinegar and 3 tablespoons parsley.
Spoon vegetable mixture into prepared baking dish and spread level. Place cod fillets on top; sprinkle Adobo evenly on fillets and arrange lemon slices over fish. Bake 15 to 18 minutes, or until fish is opaque and flakes easily when tested with a fork. Drizzle with the remaining 1½ tablespoons olive oil and sprinkle with 1 tablespoon parsley.