Take chicken in a bowl and add red chili powder, red chili flakes, ginger/garlic paste, salt, black pepper, turmeric powder, vinegar and mix them well.
Take oil in a pan and add chicken and water and cook on medium flame for 10 minutes so that water dries completely.
Now take sauce ingredients in a small bowl and mix them.
Now take mayonnaise, cabbage and capsicum in a bowl and mix them to make a salad.
Now take 3 bread slices; spread sauce on it make a layer of chicken pieces on it; after that add cheese on it; take second slice and spread sauce on its one side and put it on the chicken slice; put salad on second slice; spread sauce on third slice and put it on the second salad slice.
Now spread mayonnaise on the top of third slice; after that spread some cheese, olives and some chopped capsicum; make all the sandwiches with the same process.
Now bake it in oven at 180 for 8-10 minutes.
Remove on a dish and cut them diagonally into two pieces.