Pound the thicker end of each chicken breast to even it out so they will cook more evenly. Pat chicken dry with a paper towel. Place in bowl or bag and add teriyaki sauce and ranch dressing. Let sit for at least 30 minutes, no more than 8 hours.
Place chicken in the air fryer basket and cook at 380˚F/193˚C for about 10 minutes. Flip the chicken and cook for an additional 4 minutes.
Add the cheese and bacon and cook for 2-6 more minutes, or until internal thermometer reads 160-165˚F/71-74°C. Then let it rest for 5 minutes, sprinkle on green onions and serve.