In a large bowl, mix together the StarKist® Smart Bowls™ Latin Citrus - Quinoa & Beans with Tuna, lemon zest, olives, capers, tomatoes, red onion, cucumber, parsley and arugula.
Split between two salad bowls.
To make dressing: Combine the lemon juice, mustard, olive oil and salt and pepper into a jar and shake well.