How to Make It
Zest and juice lemons to equal 1 teaspoon zest and 4 tablespoons juice. Rub chicken with lemon zest and 1/2 teaspoon each of the salt and pepper.
Heat 1 tablespoon of the oil in a large skillet over medium-high; add chicken, and cook until cooked through, about 5 minutes per side.
Whisk together Dijon, oregano, garlic, lemon juice, and remaining 8 tablespoons oil and 1 teaspoon each salt and pepper in a small bowl. Divide dressing into 4 small portable containers with lids.
Toss together quinoa and kale in a bowl; divide evenly among 4 portable containers with lids. Slice chicken breasts, and top each portion with 1 sliced chicken breast. Divide tomatoes, cucumber, onion, olives, and feta among each portion. Package with dressing inside or on top of bowl.