You can find pomegranate molasses, preserved lemons and aleppo pepper in middle eastern grocery stores. You can substitute balsamic glaze for the pomegranate molasses and lemon zest for the preserved lemons - but I highly recommend you make your own preserved lemon,
preserved lemonssince they are so easy to make. Finally, you can substitute smoked paprika for the aleppo pepper but again, I recommend searching it out!