Preheat your oven to 375F with a rack in the middle position. Spray a 9''x13'' baking dish with non-stick spray, or line with parchment paper.
Crush the 2 cups of corn flakes until it becomes the size of oatmeal. After being crushed, it should make 1 Cup. Place the crushed corn flakes in a large shallow bowl with the rest of the coating ingredients and stir to combine.
Spoon out the ⅓ Cup of mayonnaise into a separate small container. Using a silicone brush, apply the mayonnaise generously to cover all sides of the chicken breasts.Important note: Do not put back any portioned out mayonnaise back into it's original container. It is now contaminated by the raw chicken and any extra should be tossed.
With a pair of tongues or a fork, take a chicken breast and press it into the coating mixture to cover it completely. Place it into the prepared baking tray. Repeat this step for all 4 chicken breasts.
Place into the preheated oven and bake for 25 to 30 minutes. A probe thermometer place in the thickest past of the largest breast should register at least 165F.
Take out of the oven and let rest for 5 minutes before serving. Enjoy!