If your air fryer requires preheating, preheat it to 400°F (200°C).
Pat the chicken thighs dry with paper towels.
In a large bowl, toss the chicken with the olive oil, minced garlic, sea salt, and cracked pepper until evenly coated.
In a separate bowl, combine the breadcrumbs, grated Parmesan, and Italian seasoning.
Press the breadcrumb mixture firmly onto all sides of each chicken thigh to form an even crust.
Place the thighs presentation side down (skin side down if skin is on) in a lightly oiled air fryer basket or rack, leaving space between pieces.
Cook at 400°F for about 12 minutes, then flip the thighs and cook an additional 6–8 minutes, or until the thickest part reaches 165°F (74°C).
Remove the chicken from the air fryer and let rest for about 5 minutes before serving.