Grease 9 muffin molds with cooking spray. Set aside.
In a bowl, add flour, sugar, baking powder ,and salt and mix well.
In another bowl, add the yogurt, oil, egg ,and vanilla extract and beat until well combined.
Add the flour mixture and mix until just combined.
Fold in the chocolate chips and pecans.
Slide the Air Fryer Basket inside and adjust the temperature to 355 °F to preheat for 5 minutes.
After preheating, arrange the muffin molds into the Air Fryer Basket in a single layer.
Slide the basket into Air Fryer and set the time for 10minutes.
After cooking time is finished, remove the muffin molds from Air Fryer and place onto a wire rack to cool for about 10 minutes.
Finally, invert the muffins onto wire rack to completely cool before serving.