In an air fryer, cooking chicken breast can take approximately 20-25 minutes. It is important to preheat the air fryer before placing the chicken breast in for even cooking. Season the chicken breast with your desired herbs and spices for added flavor. Make sure to flip the chicken breast halfway through the cooking process to ensure even browning on both sides. Use a meat thermometer to check that the internal temperature of the chicken breast reaches 165°F (74°C) to ensure it is fully cooked. Enjoy a delicious and healthy meal with this quick and easy air fryer method!