Claudia Roden the history of the chickpea and hummus
The full name for hummus is ḥimmaṣ bi ṭaḥīna - arabic for chickpeas with sesame paste.
Hummus is an ancient food. Chickpeas, sesame, lemon, and garlic have been eaten in the Middle East for millennia. But there is not much evidence that we call hummus today, ḥimmaṣ bi ṭaḥīna, existed before the Abbasid period in Egypt and the Levant, about 750 CE(AD).
The earliest known recipes for a dish like ḥimmaṣ bi ṭaḥīna date to 13th century Egypt. Though these recipes use chickpeas and some of the ingredients, none of them would taste or appear like what we know as hummus. The earliest recipe for hummus comes from late 19th-century Damascus (capital of Syria).