Start by cutting the potatoes into 1-inch pieces. Place them into a large mixing bowl, and then diced the bacon and place on top of the diced potatoes. Dice the onions, and add them to the bacon and potatoes. Mix in the olive oil, dried rosemary, smoked paprika, salt, and pepper. Mix well. Pour your potato mixture into the air fryer basket, and set the time for 15 minutes at 400 degrees F. After 15 minutes, flip the potatoes, and check and see if they are fork tender if they are not, set your timer for another 5 minutes. Otherwise. Plate, serve and enjoy!