Quinoa: Rinse the quinoa off in a strainer, and then add it to a large sauce pan. Add the vegetable broth, and bring it to a boil. Cover with a lid and turn down the heat to simmer for 15 minutes, or until all the water is absorbed. Fluff with a fork and set aside.
Chicken: Mix the chicken seasoning together in a small bowl. Add the olive oil to a large skillet and put on medium-high heat. Pound out the chicken so it's ½-3/4 inch thick. Sprinkle each side of the chicken with the seasoning. Add the chicken to the pan once it's hot. Cover the pan with a lid and cook for 3-4 minutes, or until the chicken is golden-brown on the bottom. Flip, and cook for another 3-4 minutes, or until the meat reaches an internal temperature of 165° F. Move the chicken to a plate and cover. Let it sit for about 10 minutes before cutting into bite-sized pieces.
Chickpeas (optional)*: Heat a tablespoon of olive oil in a small frying pan on medium heat. Drain and rinse the chickpeas, then add them to the frying pan. Sprinkle with salt, pepper, and garlic powder. Cook until they turn golden brown, stirring occasionally.
Dressing: Whisk all ingredients together in a small bowl and set aside.
Assembly: Add the quinoa, chicken, chickpeas, cherry tomatoes, avocados, red bell pepper, orange bell pepper, cucumber, onion, feta cheese, and parsley to a large bowl. Mix well. Add the dressing**, and mix until dressing is evenly distributed throughout. Serve immediately. Enjoy!