In bowl, add chicken, lemon juice and tandoori masala, mix well.
In frying pan, add butter and marinated chicken, cook until chicken is done and shred it.
In bowl, add shredded chicken, pizza cheese, bell peppers, onion, red chili crushed and oregano, mix well and set aside.
In melted butter, add oregano and dried basil leaves, mix well and set aside.
Spread herbed butter on bread slice, keep buttered side on the grill sandwich maker, spread pizza sauce on bread slice, add chicken filling, pizza cheese and olives.
Take another bread slice, spread pizza sauce and place on sandwich, spread herbed butter.
Close the grill sandwich maker and grill until done (3-5 minutes).