I own both a beardie and a bts. Their requirements are similar...I always provide fresh greens, with some type of veggie or squash on top every morning. The dragon gets super worms a couple times a week while the skink gets canned cat food (Wellness Core turkey & chicken) 2-3 times a week. Once she wakes up, I plan to start cooking some fresh meats for her.

As far as your question about the prepared diet or pellets, the vet I took my BTS didnt recommend any. Freshly prepared foods are always going to be the best option for your animals. I don't see why some pellets would hurt anything, if added in the salad or the meat. Just remember, that an adult BTS does not need protein daily, but only a couple times a week, much like dragons.

My girl:

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0.1 American Bulldog - Maui
0.1 Shiba Inu - Mako
1.0 American Pit Bull Terrier - Magnum TT, CGC, TDI
2.0 White DSH Cats - Lucaya (Luke) & Fiji
1.0 Sunrise Corn Snake - Sunny Tequila
1.0 Orange Bearded Dragon - Orin
1.0 Albino Leopard Gecko - Ed
0.1 Irian Jaya Blue Tongue Skink - Zambuka
0.1 Spider ball python - Arana
0.3 Pastel ball python - Dia & Gembi & Sally (this name subject to change)
0.1 Normal ball python - Malia
0.1 Hypo boa - Cobra (she's mean)
1.0 Albino boa - Willie
1.0 Brazilian Rainbow Boa - unnamed