Put garlic in a food processor and mince fine. Add in the garbanzos and pulse, scrape down the sides repeatedly to make sure it gets chopped smooth.
When the garbanzos are relatively smooth, add in the peppers, tahini, lemon juice, and seasonings. Process until a smooth paste is achieved. Scrape down sides to incorporate everything well.
With the processor running, drizzle in the oil in a steady stream. When it reaches a consistency that is smooth, but not too loose, stop adding the oil. Too much will make it runny.
Put hummus in a serving bowl and chill or leave at room temperature.
For the olives: Slice the lemons relatively thin. Grille the slices at a high temperature. Then cut them into 1/4's.
Drain the olives of any liquid. Toss in a bowl with all the other ingredients. Then bowl them up to serve. Refrigerate for at least an hour to allow the flavors to blend.
Cut pita bread into wedges and/or cut some fresh vegetables. Serve alongside the hummus and olives
Keyword Appetizer, Citrus, Hummus, Olives, Pita, Red pepper, Roasted, Spiced