Take alt, pepper, chicken seasoning, lemon juice, oil and mix well. Add chicken in and mix well. Leave to marinate to 1 hour. Heat grill pan place chicken on grill pan cook for 8 to 10 mins on each side. Take it off the heat and chop it into small pieces.
Take all ingredients except bread in a bowl, add chicken and mix well.
Spoon this over bread and cover with another slice. Grill the sandwich till it is cooked on both sides.