Combine 3/4 cup buttermilk, 1 tbsp Cajun seasoning and 2 blended eggs in a large dish. Soak chicken breasts in mixture while you prepare Spicy Honey Drizzle and Jalapeno Buttermilk Dressing.
In a large Ziplock bag, combine 3 cups flour and 1/3 cup Cajun seasoning.
Place chicken breast, one at a time, in Ziplock bag and shake it up. Remove from Ziplock bag and place back in buttermilk mixture. Then one more time in the Ziplock bag until all chicken breasts have been double coated.
Heat vegetable oil in a large , wide rimmed pan, to about 350 degrees. I set my stove top to medium - medium high. You want enough oil to nearly cover the chicken. This is not deep frying, but rather pan frying.
Fry chicken breast, turning as each side browns, until fully cooked through. Times will vary depending on thickness of chicken breasts. Internal temp should read 165 degrees.
Remove chicken to wire rack and season with more Cajun seasoning right away.
Assemble Hot Chicken Sandwiches: Place a spoonful of Jalapeno Buttermilk Dressing on bottom bun, then fried chicken breast, then Spicy Honey Drizzle, then Jalapeno Buttermilk Dressing and finish with sliced mango, cilantro and the top bun.