Prepare the mushrooms: Clean your mushrooms by wiping each cap with a damp kitchen towel or using a mushroom brush to remove any dirt, being careful not to soak them as they absorb moisture; slice smaller mushrooms in half and larger ones into quarters or thick slices, keeping them about the same size for even cooking, and transfer them to a large mixing bowl.

Season the mushrooms: Add garlic powder, salt, and black pepper to the mushrooms in the bowl and toss gently to coat evenly, then drizzle soy sauce over them for flavor and browning, followed by olive oil to help crisp them up in the air fryer, and toss again to ensure everything is evenly coated.

Cook the mushrooms in the air fryer: Preheat the air fryer to 360°F for 3-5 minutes, then carefully arrange the seasoned mushrooms in a single layer in the air fryer basket (avoid overcrowding) and cook for 8-10 minutes, shaking the basket halfway through (4-5 minutes) to ensure even cooking; the mushrooms should be tender with crispy edges and a golden brown color.

Final step: Once cooked, carefully remove the basket from the air fryer, transfer the mushrooms to a serving dish, garnish with freshly chopped parsley for added flavor and color, and serve immediately while hot and crispy.