Reheat grilled chicken breast on grill about 3-4 minutes, set aside to cool a bit. Cut open avocado. One half cut into thin slices and drizzle with a lime juice. Other half mash with cilantro, lime juice and a dash of salt. Slice the warm chicken breast, thick or thin whichever you prefer.
Now you are ready to build your sandwich.
Place 2 slices on your indoor grill plate, leave for about 1 minute to lightly toast. On a plate, board or on grill place 1 slice toasted side up. Drizzle slice with olive oil and add on your avocado spread. Top with a few slices of avocado, sure to stay put. Now add your sliced grilled chicken, top with remaining avocado slices and Swiss cheese. Yes, Swiss. Drizzle with a bit of olive oil and top with your second slice of bread, toasted side down. Lower or close your indoor grill lid. Leave for about 2-3 minutes, remember we just want to heat through and melt the Swiss cheese. Remove from heat and let rest for 2 minutes. Enjoy!