1.Blend or process beans, chickpeas, parsley, onion, flour, spices, egg and soda until almost smooth. Shape rounded tablespoons of mixture into 16 felafel patties. Place on tray, cover; refrigerate 30 minutes.
2.To make marinated grilled eggplant; cook eggplant on heated oiled flat plate until browned both sides. Combine eggplant in medium bowl with remaining ingredients.
3.Cook felafel on heated oiled flat plate until browned both sides.
4.Spread heated pitas with hummus; top with mesclun, eggplant and felafel, roll to enclose filling.