Mix the dressing for the salad. In a large bowl, whisk together olive oil, lemon juice, red wine vinegar, salt, and pepper.
Make the chopped salad. Add cucumber, tomatoes, bell pepper, red onion, avocado (if using), and herbs. Toss gently to coat.
Taste and adjust salt and acid.
Stir together the protein mix. In a medium bowl, combine chickpeas, tuna, capers, celery, dill or parsley, lemon zest and juice, and olive oil. Season with salt and pepper. Mash a few chickpeas lightly with the back of a spoon for a creamier texture.
Whisk the yogurt sauce. In a small bowl, mix yogurt, garlic, lemon juice, olive oil, honey, salt, and pepper.
Thin with a teaspoon of water if you like it pourable.
Assemble your plates. Add a handful of greens or a scoop of chilled grains to each plate. Spoon on the chopped salad and a hearty portion of the protein mix. Drizzle with yogurt sauce.
Add extras for crunch and bite. Top with olives, pickled onions, or pepperoncini if you have them.
Serve with pita or bread for scooping.
Finish with brightness. Squeeze a little extra lemon over everything and crack fresh black pepper on top. Eat right away.