Steps
1. Cook the quinoa according to package instructions and let it cool.
2. Marinate the chicken breast with olive oil, lemon juice, minced garlic, salt, and pepper. Let it sit for 10 minutes.
3. Heat a grill pan over medium-high heat and grill the chicken breast for about 5-7 minutes on each side, or until fully cooked.
4. In a bowl, mix the cooked quinoa with diced cucumber, tomato, red onion, and chopped parsley.
5. Season the quinoa salad with olive oil, lemon juice, salt, and pepper to taste.
6. Serve the grilled chicken breast alongside the quinoa salad.