In a saucepan over medium-high heat, add pineapple chunks and crushed pineapples (include the syrups).

Cook pineapples until sauce is bubbling. I cooked it for about 10 minutes.

Remove from heat and add the chia seeds. Stir well the chia seeds and the pineapples.

Place in a food processor and pulse till smooth.

Transfer to a small bowl and set aside to cool.

To serve, toast some buns and cook some ham. Place pineapple chia jam and cooked ham inside the buns. Enjoy!