Prepare the pineapple by ensuring it is cut into uniform 1-inch chunks. Pat the chunks dry with a paper towel to aid in better caramelization.

In a medium bowl, toss the pineapple chunks with the melted coconut oil until evenly coated.

In a separate small bowl, whisk together the brown sugar, cinnamon, and salt.

Sprinkle the sugar-spice mixture over the oiled pineapple chunks and toss gently until all pieces are well-coated.

Preheat your air fryer to 380°F (195°C). Arrange the coated pineapple chunks in a single layer in the air fryer basket, ensuring not to overcrowd it (work in batches if necessary).

Air fry for 8 to 10 minutes, shaking the basket vigorously halfway through (around 5 minutes), until the edges are golden brown and slightly charred.

Remove immediately and serve warm. They are excellent over yogurt, ice cream, or simply enjoyed as is.