Whisk together olive oil, lemon juice, salt, and pepper to create a marinade. Pound chicken to ½ inch thickness and marinate for at least 30 minutes.

Prepare tzatziki by mixing Greek yogurt, grated cucumber, minced garlic, herbs, and salt. Chill for about 30 minutes.

Cook rice or quinoa according to package instructions until tender, about 15 minutes.

Preheat air fryer to 380°F. Cook marinated chicken for 7 minutes, flip, and cook an additional 3-4 minutes until done.

Let chicken rest for 5 minutes, then slice into strips.

Assemble bowls with grains, veggies, sliced chicken, and tzatziki. Add olive oil and lemon juice to taste.