It can be normal for beardies to zone out under their heat lamps with their eyes closed sometimes.
Do you have any idea how old yours is? Eating lots of salad is almost always a good thing, but how many crickets a day is age and size dependent for what is normal or good.
They can be a little "limp" first thing in the morning when you turn on the heat lamps because they're still cold and half asleep, but it never hurts to find yourself a good reptile vet and establish a relationship early on. Other than the expense, it never hurts to get a "wellness check" once in a while even if it turns out that there's nothing seriously wrong.
Also, I'm assuming that you just have one beardie, and that you're using "they" as a gender neutral singular pronoun. (Don't get me started on how I think it's high time the English language developed some real gender neutral pronouns... :roll: ) Otherwise, I'd probably be doing the lecture on how it's never a good idea to keep more than one beardie in the same enclosure.
Pet stores are notorious for giving bad advice and selling kits that don't include what you really need.

You'll get better advice from the previously mentioned reptile vet.