Boil the chickpea pasta in salted water according to package directions, then drain and rinse with cold water to stop the cooking process.
Season the chicken breast with half of the sea salt and black pepper, then saut é in a non-stick pan over medium heat until cooked through.
Let the chicken rest for 5 minutes before dicing it into bite-sized cubes.
In a small mixing bowl, whisk together the extra virgin olive oil, lemon juice, minced garlic, dried oregano, and the remaining salt and pepper.
Halve the cherry tomatoes, dice the cucumber, and finely mince the red onion.
In a large bowl, combine the chilled pasta, diced chicken, baby spinach, and chopped vegetables.
Pour the lemon-herb vinaigrette over the salad and toss thoroughly to ensure everything is well-coated.
Serve immediately or refrigerate for 30 minutes to allow the flavors to meld.