Cook the quinoa according to the package instructions. Set aside and allow it to cool.
Place the chicken in a bowl. Add 1 tablespoon olive oil, cumin, thyme, parsley, oregano, cinnamon, garlic powder, salt, and pepper. Toss until the chicken is evenly coated.
Prepare the dressing by combining the Greek yogurt, black pepper, salt, olive oil, lemon juice, and garlic in a bowl. Stir until smooth. Add water if needed to reach your preferred consistency.
Heat the remaining tablespoon of olive oil in a large pan over medium heat.
Cook the chicken for 2½ to 3 minutes on each side, until golden or until the internal temperature reaches 67°C (153°F). If the pan feels dry, add a little more oil as needed.
Transfer the chicken to a plate and allow it to rest for 5 minutes before slicing.
In a large bowl, combine the lettuce, quinoa, kidney beans, tomatoes, cucumber, sweet corn, and onion.
Top with the sliced chicken and salad dressing, then serve.