In a medium skillet over medium heat, add oil to the pan and sauté spinach 3 minutes. Sprinkle garlic and salt onto spinach and add onion to the pan.
Continue sautéing 3 more minutes, then remove from heat and place in medium bowl. Fold feta into spinach mixture.
Slice a roughly 4" slit into the side of each chicken breast, lengthwise. Spoon half of the mixture into each piece and secure closed with a couple toothpicks. Sprinkle outside of chicken with remaining garlic powder and salt. Drizzle with avocado oil. Place chicken breasts into the air fryer basket.
Adjust the temperature to 350°F and set the timer for 25 minutes.
When completely cooked chicken should be golden brown and have an internal temperature of at least 165°F. Slice and serve warm.
0 servings
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.