Soak 1 cup of dried garbanzo beans in water with 1 teaspoon of baking soda overnight. Drain and rinse thoroughly under cold water until clear.

In a food processor, pulse cilantro and mint until chopped. Add chickpeas, garlic, salt, black pepper, coriander, cumin, and chili powder. Process to a coarse meal and refrigerate for at least 1 hour.

Stir in sesame seeds and baking powder into the mixture. Form small balls (about 2 inches), slightly flatten them, and prepare to fry.

Heat oil in a skillet over medium-high heat. Fry falafel balls in batches for about 2 minutes on each side until golden brown. Drain on paper towels.

Spread hummus on warm pita bread, then layer with tomatoes, cucumbers, lettuce, red onions, and crispy falafel. Drizzle with tzatziki sauce and sprinkle with dill. Serve immediately.