Preheat the oven to 425°F.
On a sheet pan, toss the cooked quinoa with 2 tablespoons olive oil, za'atar, and a heavy pinch each of salt and pepper.
Bake for 20 to 25 minutes, stirring halfway through, until golden and crisp.
Let cool on the tray.
In a large bowl, toss all the salad ingredients with the crispy quinoa until well combined.
Taste and adjust the seasoning with salt and pepper.
Serve.
