Drain and rinse the chickpeas.
Put everything other than the flour and baking soda in a food processor.
Pulse until the mixture has the texture of coarse sand.
Transfer to a large bowl, and stir in the remaining ingredients.
Cover and chill for 30-60 minutes.
Roll 2 tbsp into 1"-1.5" balls with your hands, or an ice cream scoop. Make 2" wide x 1/2" thick patties if pan frying or baking.
If the mixture is too dry and crumbly, add a teaspoon of water or lemon juice.
Fry in 350F oil until golden brown (approx 1-2 mins), or bake on an oiled sheet at 375F until golden brown (approx 25-30 mins), flipping halfway through.