Over high heat, heat oil in a large frying pan and then add the ground chicken. Break it up and pour in about 1/8 cup of the coconut aminos. Cook it and break up the meat as it cooks. Add in a dash of salt and pepper.
As soon as about half the chicken is cooked through, add in the frozen vegetables and water chestnuts. Add in another pinch of salt and pepper. Cook until the vegetables are warm, then carefully drain liquid in the pan. Add the green onion slices.
Return pan to heat, add remaining coconut aminos and cook for a few minutes until the meat and vegetables are cooked through.
To serve break off lettuce pieces of the lettuce and scoop a spoonful of meat and vegetables into it and enjoy!