In a medium bowl, mix cream cheese, red onion, 1 tablespoon chives, olive oil, Old Bay seasoning, Worcestershire sauce, and liquid smoke until smooth and creamy.
Flake the tuna with a fork until light and separated.
Add tuna and diced pimiento to the mixture and stir until well combined.
Cover and refrigerate for at least 1 hour to allow flavors to develop.
Taste after chilling and adjust liquid smoke if needed.
To assemble, spread the smoked tuna spread onto crackers or cucumber slices.
Garnish with remaining chives and serve immediately.