Freeze dried chicken could be a bit less creepy for you!It tends to be more popular than some smaller insects with Syrians anyways
Syrians tend not to be too fond of tiny seeds so millet and budgie seed in general can be a bad idea.If you're going to try adding millet,only get a small portion and get the straight seeds(not budgie seed,these often have added citrus or added vitamins which hamsters definitely shouldn't be getting).Rat Rations in the UK sells lots of potential straight grain/seed options but you can usually get plain millet of some variety at a pet store anyways!
Syrians will destroy millet sprays and create a huge mess in the cage,but as for eating the actual seeds that isn't too common.
A note on Trill budgie food(and plenty other premade bird foods as well)is that it does contain oyster shell and grit.These are both unsafe for hamsters,so definitely do not feed Trill.It is also an extremely unspecific mix so even without the shell and grit it would still not be a good idea to feed such a food even as a treat.