Man this was a BIG BURGER! It was almost inedible, we had to keep squishing ours down! But it was soooo good! I made an herb mayo as following: 1/4 C. mayo, 1 tsp. buffalo sauce, 1/2 tsp each: dried basil leaves, italian seasoning and parsley. It was perfect! I used an italian cheese/herb focaccia. I think it's better if you lightly toast the bread first because focaccia has a very chewy texture that doesn't make good sandwiches in my opinion. Instead of making guacamole, I just mashed an avacado and used that. This was really delicious, I will be making it again, but probably flattening the chicken breast before I cook it. Thanks for a great recipe!