Soak dried chickpeas in water overnight, ensuring they are completely covered.
Drain and rinse the soaked chickpeas thoroughly.
In a food processor, combine chickpeas, onion, garlic, parsley, cilantro, falafel spice, and salt. Pulse until mixture forms a coarse paste.
Shape the mixture into small patties using your hands.
Heat oil in a deep pan to 350°F (175°C).
Carefully fry falafel patties in batches until golden brown and crispy, about 3-4 minutes per side.
Remove falafel and drain on paper towels.
Warm pita bread and fill with falafel, lettuce, tomatoes, pickles, and tahini dressing.
Wrap tightly and serve immediately.