In a large shallow bowl combine flour and spices. Whisk or stir to combine and set aside.
.Use a mandoline slicer or a sharp knife and cutting board to slice each tomato into ¼ inch pieces (no larger). Lay the sliced green tomatoes out on a large cookie sheet or plate and sprinkle with salt and pepper.
Next dredge each slice in the flour mixture until coated shaking off the excess. Return to the cookie sheet and let sit for 5 minutes. After 5 minutes the tomatoes will begin to soak up some of the flour mixture. Once this happens dredge the tomatoes through the flour mixture a second time shaking off the excess.
Add vegetable oil to a large deep skillet and heat over medium heat. You want the oil about an inch deep. Once the oil is shimmering, add your green tomatoes in and fry for 3-5 minutes per side until they are brown and crispy.
Once golden brown remove from the oil and place on a paper towel lined plate and continue to fry in batches until all the tomatoes are fried. Serve warm with hot mayo sauce.
Hot Mayo Sauce
Combine all ingredients into a large bowl and whisk to combine. Adjust the spice level accordingly to your taste preference.