In a small bowl, combine melted unsalted butter, extra virgin olive oil, minced garlic, grated parmesan, salt, paprika, Italian seasoning, black pepper, and fresh lemon juice. Mix thoroughly until cohesive.

Pat chicken thighs dry with paper towels to remove excess moisture.

Generously apply the garlic parmesan mixture to each chicken thigh, ensuring coverage under the skin.

Arrange the coated chicken thighs in the air fryer basket, skin-side up, avoiding overcrowding.

Set air fryer to 390°F and cook chicken thighs for 13 minutes. Flip and cook for another 6-7 minutes until golden and cooked through.

Allow chicken to rest for 5 minutes before serving.