Spray the basket of the air fryer or ninja foodi with olive oil cooking spray.
Place the potatoes and beans in the basket.
Top with shredded bacon if preferred.
Sprinkle evenly with the garlic salt.
Coat with olive oil cooking spray.
Set air fryer to 390 degrees and cook for 25 minutes.
I suggest checking in on the vegetables halfway through the cooking time and stirring them. At this point, add an additional coat of olive oil if need.
Notes
Remember all air fryers tend to heat differently, this is why it's important to check on the food about halfway through the cooking time.