Subject: Twilight Sparkle
Race: Unicorn (birth), Alicorn
Known Alias: Element of Magic, Princess of friendship
Result:
Medium, dry hay, light sauce, thin-crust

Subject: Applejack
Race: Earth pony
Know Alias: Element of Honesty
Result:
Large, extra cheese, chopped onions, normal sauce with a hint of oregano, normal-crust

Subject: Rainbow Dash
Race: Pegasus
Know Alias: Element of Loyalty, fastest pegasus to ever live (Self-claimed)
Result:
Medium, extra cheese, diced olives, mushrooms, normal sauce, thick-crust

Subject: Rarity
Race: Unicorn
Known Alias: Element of generosity, The biggest Drama queen to have ever lived (Give by Applejack and Rainbow Dash)
Result:
Small, gourmet style Veggie pizza, light cheese, thin-crust

Subject: Fluttershy
Race: Pegasus
Known Alias: Element of kindness, The Animal whisper, The angel with the stare
Result:
Medium, three-cheese pizza, light sauce, light parmesan cheese sprinkled, normal-crust

Subject: Pinkie Pie
Race: Earth pony
Known Alias: Element of laughter, Master Party pony
Result:
Extra Large, Desert pizza with many different candy toppings with chocolate sauce, Stuffed powdered dounut crust

Subject: Spike
Race: Dragon
Known Alias: Dragon-lord (not publicly known), Spikey wickey (given by rarity Rarity), Savior of the crystal empire, Spike the dragon
Result:
Large, Extra cheese, gem covered toppings, normal-crust
Note: This pizza is referred commonly as a ten thousand bit style pizza due to the gem stones used for toppings and the name isn't just a name for the pizza is worth ten thousand bits only made by the royal cooks of canterlot castle for dragon guests

Subject: Princess Celestia
Race: Unknown birth species, Matured Alicorn
Known Alias: The solar princess, sun butt, Tia (given by Luna), co-ruler of Equestria
Result:
Large, detroit style deep dish pizza, extra sauce.

Subject: Princess Luna
Race: Unknown both species, Matured Alicorn
Known Alias: The princess of the moon, Lu-lu (given by celestia), co-ruler of Equestria, Nightmare moon (alternate personality)
Result:
Medium, oven baked, extra cheese, oregano and parmesan sprinkled upon the top, stuffed crust

Subject: Salem Grey
Race: Human (birth), Chimera
Known Alias: N/A
Result:
Medium, pan baked style pizza, bacon and pepperoni toppings, extra cheese, parmesan, stuffed crust

Subject: Malo
Race: SCP-1471-A (Mal0 version 2.0.0)
Known Alias: Ms. Schrodinger
Result:
Medium, pan kabed style pizza, bacon and pepperoni toppings,extra cheese, parmesan, stuffed crust

Author's Note

Just a short chapter of what I think if the element and princesses ever used SCP-458.

Of course, I don't know their actual favorite pizzas so this is mostly headcanon all but Salem and Malo's favorite. The two share their favorite pizza together mostly because the two are connected.

If you guys would think about what kinda pizzas they all liked (Not including Salem and Malo)