Add veggies, tuna, olives, pepperoncinis, and herbs to the bowl with the dressing and stir to coat in dressing.
Add pasta to the salad and toss to mix in the pasta.
Taste for seasoning and add more salt, pepper, herbs, and lemon zest if desired.
Portion salad onto plates and top with crumbled feta, a drizzle of olive oil and black pepper, if desired.