Buttermilk/Franks Hot Sauce Dip (twice) and...
Get your tomato slices as dry as possible.
Pour some buttermilk in a bowl and add a dashes of Frank's Hot Sauce.
Dip into buttermilk mixture, then Jiffy mixture, then repeat.
Key to keeping crust on when flipping: Use spatula, not tongs. I have a big, round, flat metal spatula with holes; works perfectly.