So you are saying you don't have to feed them crickets and you can just feed them Mealworms everyday?
Good night, where did you get that idea from?
I'm saying a couple of things but not that!
I feed mealworms rather than other insects generally 1 day per week. You want as much variety as possible in the diet, and if you have something more than other things, you need to choose something like crickets, roaches, or silkworms (I guess- not having used them myself) as your staple with other things for variety.
It's really better if no single food item makes up more more than 20-30% of the total diet.
I'm also saying that properly fed, mealworms are probably more nutritious than most here seem to believe. Sure, if you feed them bran or oatmeal primarily they aren't going to be so great. But if you feed them the same great dry food recipes people are feeding their crickets and roaches, they are going to be better nutritionally than the bran fed, and while I don't know of a complete nutritional analysis done up on excellently fed mealworms like this, I do know that there are significant differences in other insects fed an excellent diet during their growth- such as crickets and even soldier fly larvae. Also, mealworms were found by one researcher to gutload calcium more effectively than crickets when fed the same diet. These specially fed mealworms were used with crickets as the sole food items by that researcher to breed panther chameleons over multiple generations in his lab at the University of Texas. (The researcher was Ferguson- read about it in the book "The Panther Chameleon: Color Variation, Natural History, Conservation, and Captive Management"). I'm sure they are higher in certain amino acids, certain other minerals in addition to calcium and certain vitamins than crickets, when fed the same diet, and that crickets similarly would remain higher in other certain amino acids, minerals and vitamins.
That's why you want variety and not rely on a single food source.
I feed them the same as my crickets and roaches and superworms. I even feed fresh fruit and veggies every 1-2 days in addition to the dry food I make up for everything. But I can't get so much of the veggies and fruit into the worms as I can the other insects- too much moisture in mealworm bins invites mites (been there done that years gone by). But they will rapidly consume a modest amount of fruits and veggies every 1-2 days - they swarm the veggies and chow down.
But there may be other problems- for example, the fat content will quite possibly remain higher than crickets even when the diet is improved.
So no, you don't want to feed them to your lizard every day instead of crickets.
But after many years of a feeding 1 day per week instead of some other insect, they've done well for my lizards. They are a useful and easily cultured insect to use as ONE PART of a VARIED diet...