Peel the chickpeas by pinching them between your finger and thumb. The skin should slide right off, Discard the skins and place peeled chickpeas in the bowl of a food processor. Add the tahini, lemon juice, garlic, and salt. Process until smooth. If you would like a thinner, creamier hummus, add the reserved chickpea liquid a little at a time until the desired consistency is reached.
Spread hummus on a plate and top with optional toppings. Serve with baked pita chips.