Step 1Using on/off pulses, pulse the chicken in the work bowl of a food processor along with the lime zest, juice and fish sauce until coarsely chopped. Remove to a large bowl.
Step 2Add the water chestnuts, green onion, jalapeño, lemongrass, and ginger to the bowl. Chop finely using on/off pulses. Add to the chicken along with the cilantro, panko, and a bit of salt and pepper. Mix well.
Take a small teaspoon full of the mixture and form into a ball, then set in the microwave for 30 seconds or until cooked; taste for seasonings, adjust with salt and pepper if needed.
Form mixture into patties.
Step 3Heat a skillet over medium heat until hot, add the oil then the patties. Cook, turning once until browned and cooked through; about 6 minutes per side. Serve hot.