Prepare the pasta according to the instructions on the package, prepare slightly al dente so that it holds up in the pasta salad. Drain and set aside to cool.
In a large bowl, combine tuna, sun dried tomatoes, scallions, parsley, capers, and olives. Mix well.
Add drained, cooled pasta to bowl and stir to combine.
In a small bowl/jar, whisk together lemon zest, lemon juice, garlic, oregano and olive oil. Taste and season with salt and pepper as needed.
Drizzle dressing over top of pasta salad and toss all together right before serving.
National Pasta Association Recipe