Grill the chicken breast over medium-high heat until fully cooked, then set aside to cool before dicing into bite-sized pieces.
Boil the chickpea pasta in salted water according to package directions, then drain and rinse with cold water to stop the cooking process.
Halve the cherry tomatoes and finely dice the cucumber, red bell pepper, and red onion.
In a small glass jar or bowl, whisk together the extra virgin olive oil, fresh lemon juice, dried oregano, sea salt, and black pepper.
Add the cooled pasta, diced chicken, and chopped vegetables to a large mixing bowl.
Drizzle the lemon-herb vinaigrette over the salad and toss thoroughly to ensure every ingredient is well-coated.
Garnish with crumbled feta cheese and freshly chopped parsley, then serve immediately or chill for 30 minutes to let flavors meld.