Season the chicken breast with half of the sea salt, black pepper, and dried oregano.
Grill or pan-sear the chicken over medium-high heat for 6-7 minutes per side until the internal temperature reaches 165°F.
Let the chicken rest for 5 minutes before dicing into bite-sized pieces.
In a large mixing bowl, whisk together the extra virgin olive oil, lemon juice, and the remaining salt, pepper, and oregano to create the dressing.
Add the rinsed chickpeas, diced cucumber, halved cherry tomatoes, diced red bell pepper, and minced red onion to the bowl.
Toss the vegetables thoroughly to ensure everything is evenly coated in the lemon-herb dressing.
Gently fold in the diced chicken, crumbled feta cheese, and chopped fresh parsley before serving.