In a medium bowl, cover the chickpeas and fava beans with water and soak them overnight.
After soaking, drain the chickpeas and fava beans and pat them dry. Place them into a food processor, with a teaspoon of salt and process until they resemble a coarse crumb. Add the mint, parsley, cilantro, jalapeño, garlic, onion, and sesame seeds and pulse until everything is finely ground and the mixture is a fine, web crumb. Transfer the mixture to a bowl, stir in the baking soda, and chill for at least 30 minutes.
Heat the oil in a heavy bottom saucepan. Using a small ice cream scoop, pack the falafel mixture tightly into the scoop and form balls, slightly smaller than a golf ball. Carefully drop the balls into the hot oil, and fry a few at a time until golden brown, making sure to flip them over as soon as they are brown on one side. Using a slotted spoon, remove the falafel from the oil to a paper towel-lined plate and let cool and excess oil drip off. Repeat process with the remaining falafels.
In a large bowl, combine the lettuces, cabbage, cucumber, tomatoes and fresh herbs. Add the falafel on top and serve with the dressing on the side.