Preheat oven to 200 C.
Cover a baking tray with parchment paper.
Prepare the pesto sauce: Add all the pesto ingredients to the food processor. Blend until smooth and set aside.
Heat a skillet on medium heat.
Add oil, garlic clove, one tarragon spring, and mushrooms.
Sautee for about 2 minutes, add wine and sautee 3 more minutes. Discard the garlic clove and set aside.
Lay the pizza dough on the already prepared baking tray.
Brush it with olive oil and cover with a generous layer of pesto.
Add the olives, sun-dried tomatoes, and sauteed mushrooms. Sprinkle with oregano and basil.
Cook for about 20 minutes or until the edges are golden.
Top with fresh chives and serve. Bon appetit!