My 2 cents worth:
First, welcome!!!! It’s awesome that you joined this community, and, from your pics and willingness to ask questions, I’m sure you and your new baby will hit the decade mark together!!!! Again, welcome!
Second, props to anamcara and Beman! The time and care they’ve taken to respond here is a real testament to the kind of info and insight that this forum can provide.
Third, I agree with everything both have said. Repashy calcium plus loD is what I use for all my veileds at every feeding. A linear t5 is probably the best uvb source (short of natural sunlight) that you can give your Cham. Personally, I always use a higher uvb % than other very experienced keepers like beeman would recommend, but that’s just me. I’m a guy after all: bigger is always better, over-compensating...you know. With respect to feeders, a varied diet is always best. Crickets one day, dubias the next, black soldier fly larva (bsfl) the next, and then silk worms. Hornworms are great for hydration and variety but don’t pack enough protein for a staple feeder.
Last, welcome again!!!!!