Prepare the Labneh Base: Place the Greek yogurt in a cheesecloth-lined sieve set over a bowl. Let it drain in the refrigerator for at least 30 minutes to release excess whey. Discard the whey.
Craft the Whipped Feta & Labneh Spread: In a food processor, combine the strained yogurt (labneh), crumbled reduced-fat feta, 2 tbsp extra virgin olive oil, minced garlic, and 1 tbsp lemon juice. Blend until completely smooth and creamy, about 1-2 minutes. Scrape down the sides as needed. Transfer to a serving bowl, stir in the fresh dill, and chill until ready to serve.
Build the Smoky Red Pepper & Walnut Dip: Wipe out the food processor bowl. Add the rinsed roasted red peppers, walnuts, whole wheat panko, 3 tbsp olive oil, 2 tbsp lemon juice, garlic, smoked paprika, and cumin. Process until the dip is mostly smooth but retains a slight texture. Season with a pinch of black pepper. Transfer to a second serving bowl.
Construct the Quinoa Tabbouleh: Combine the rinsed quinoa and 1 cup of boiling water in a medium saucepan. Bring to a simmer, then cover, reduce heat to low, and cook for 15 minutes, or until the water is absorbed. Remove from heat and let stand, covered, for 5 minutes. Fluff with a fork and spread on a plate to cool completely. In a large bowl, combine the cooled quinoa, chopped parsley, mint, tomatoes, cucumber, and red onion. Drizzle with 3 tbsp olive oil and 3 tbsp lemon juice, and toss gently to combine. Season with black pepper and transfer to a third serving bowl.
Marinate the Chickpeas: In a small bowl, whisk together 2 tbsp olive oil, 1 tbsp lemon juice, dried oregano, and fresh parsley. Add the rinsed and drained chickpeas and toss to coat thoroughly. Let them marinate while you prepare the rest of the board.
Toast the Pita and Prepare Vegetables: Preheat your oven to 375°F (190°C). Cut each whole wheat pita into 6 wedges. On a baking sheet, toss the wedges with 1 tbsp of olive oil and the za’atar seasoning. Bake for 6-8 minutes, until crisp and lightly golden. While the pita toasts, wash and prepare all remaining vegetables and rinse the artichoke hearts and olives.
Assemble the Mezze Board: Place the three bowls containing the dips and the bowl of marinated chickpeas onto your large platter. Artfully arrange the toasted pita wedges, fresh vegetables, artichoke hearts, and olives around the bowls. Garnish the entire platter with fresh mint or parsley sprigs and lemon wedges for squeezing. Serve immediately.