Season the chicken breast evenly with half of the sea salt, black pepper, and dried oregano.
Heat 0.5 tsp of the olive oil in a non-stick skillet over medium heat and cook the chicken for 6-7 minutes per side until the internal temperature reaches 165°F.
While the chicken is cooking, rinse and drain the canned chickpeas thoroughly and place them in a large mixing bowl.
Add the diced cucumber, halved cherry tomatoes, and chopped fresh parsley to the bowl with the chickpeas.
In a small bowl, whisk together the remaining 1 tsp of olive oil, lemon juice, and the remaining salt, pepper, and oregano to create the dressing.
Remove the chicken from the skillet, let it rest for 3 minutes, then slice it into bite-sized strips.
Pour the lemon-herb dressing over the chickpea and vegetable mixture and toss until everything is well coated.
Top the salad with the warm sliced chicken and serve immediately.