To prepare the salad, whisk together lemon juice, olive oil, and parsley. Toss with tomatoes, cucumbers, and red onion. Season with salt and pepper. Keep cool until ready to serve.
To make the falafels, combine chickpeas, onion, garlic, cilantro, parsley, spices, salt, and pepper in the bowl of a food processor. Pulse until blended, but not pureed. Transfer to a mixing bowl. Add baking soda and flour, and mix well. Refrigerate mixture for at least one hour. Form falafel mixture into one-inch balls with wet hands or cookie scoop.
Heat oil in a stainless steel saucepan over medium heat. Gently lower falafels into hot oil and fry until they are golden brown. Reduce the heat if the falafels get dark too quickly and do not cook inside. Drain on a paper towel.
Serve with tomato and cucumber salad, pita, and your favorite condiments (tahini-yogurt, harissa, or pickles).