Step 1
In a large bowl, whisk together the lemon juice, mustard, oregano, garlic and some salt and pepper. Slowly pour in the olive oil while whisking.
Step 2
Bring a large pan of salted water to a boil and cook the orzo according to package directions. Drain and rinse in cold water. Transfer to the bowl with the dressing.
Step 3
Add the tuna, orzo, parsley, red onion, cherry tomatoes and cucumber. Stir to combine well. Add dressing.
Step 4
Divide the rocket amongst four serving bowls and top with the tuna pasta salad. Scatter with the pine nuts, to serve.
