In a medium bowl, whisk together olive oil, lemon juice, minced garlic, oregano, salt, and pepper to create a zesty marinade. Pound the chicken breasts and immerse them in the marinade. Cover and refrigerate for at least 30 minutes.

In a separate bowl, combine Greek yogurt, grated cucumber, minced garlic, lemon juice, and chopped fresh herbs. Mix well until smooth and set aside in the refrigerator.

Prepare your rice or quinoa according to package instructions. Chop your chosen fresh veggies.

Preheat your air fryer to 380°F. Place the marinated chicken in the basket and air fry for 7 minutes. Flip and cook for an additional 3-4 minutes until cooked through.

To assemble, create a base layer of grains in each bowl, add fresh veggies, slice the chicken, and drizzle with tzatziki and a squeeze of lemon juice.