Preheat the oven to 375 F. Line a baking sheet with parchment paper.
Add the cooked quinoa onto the baking sheet and spread into an even layer. drizzle with olive oil and sprinkle with salt. Cook in the preheated oven for 30-35 minutes, until crispy. Let cool and set aside.
While quinoa is cooking chop the vegetables and prepare the salad ingredients.
Assemble the salads: add the lettuce, chopped cucumber, tomatoes, onion, feta cheese, olives, and pita chips. Top with crispy quinoa and toss with Greek dressing.