Heat a saute pan over medium heat. Add olive oil (1 tbsp) and saute smoked sausage until just browned. Also, try grilling for a richer flavor (cut into rounds after you grill). Set aside to cool.
In an extra large mixing bowl place pasta, cheese, olives, peppers, scallions and grape tomatoes.
In a medium mixing bowl, whisk together remaining olive oil, vinegar, lemon juice, lemon zest, parsley, oregano, salt and pepper.
Pour dressing over the vegetable mixture and toss to coat. Fold in the smoked sausage and serve.