Combine the scallops and lime juice in a large bowl, making sure the scallops are submerged (add more lime juice if necessary to cover). Cover with plastic wrap and refrigerate 6 to 8 hours.
Combine the olives, tomato, onion, jalapeno, orange juice, 2 teaspoons parsley, the sugar, hot sauce and 2 teaspoons salt in a separate large bowl. Refrigerate 30 minutes.
Drain the scallops, reserving 1/4 cup of the lime juice. Add the scallops and reserved lime juice to the olive mixture. Toss and season with pepper. Cover and refrigerate, at least 1 hour or overnight.
Sprinkle the ceviche with the remaining 1 teaspoon parsley. Serve with tortilla chips.