Place the chicken breast between two sheets of parchment paper and pound with a meat mallet until it is an even half-inch thickness.
In a shallow bowl, whisk together the Greek yogurt and hot sauce until well combined.
Place the chicken in the yogurt mixture, ensuring it is fully coated, and let it marinate for at least 15 minutes.
In a separate shallow dish, combine the almond flour, smoked paprika, garlic powder, sea salt, and black pepper.
Remove the chicken from the yogurt, letting any excess drip off, and dredge it through the almond flour mixture, pressing firmly to adhere the coating.
Preheat your air fryer to 400°F (200°C).
Lightly brush or spray both sides of the coated chicken with avocado oil.
Place the chicken in the air fryer basket and cook for 12-15 minutes, flipping halfway through, until the internal temperature reaches 165°F and the exterior is golden brown.
During the last 2 minutes of cooking, place the bun in the air fryer to lightly toast.
Assemble the sandwich by placing the chicken on the bottom bun, topped with dill pickles, butter lettuce, and the top bun.