If you are caught with them you can get a heavy fine and jail time. Stick with Discoids. They are the same size and are raised the same way. I don't know what the issue is but I was reading about a fella that had to pay $1500 fiine and got 1 year in jail (reduced to 30 days) Just not worth it in my life. No reptile stores will sell them (Dubia) and saying you didn't know is not considered an excuse.
My Discoids reproduce pretty quickly. I keep them in a tub with a light bulb on 24/7 that keeps their environment at 90+ all the time. They love apples, oranges, watermelon, carrots, kale and water crystals to keep them well hydrated. Anything they see as food. When I make veggie soup I toss the ends of stuff in there and see if they like it. Check the list of things that are safe for your cham and those are the things you can feed them. When you see this thing sticking out of the abdomen of a female she is ready to to drop her babies. I like to use empty paper towel and toilet paper cardboard rolls because it makes it easy to shake them out, but you can use cardboard egg crates. They like to hide when they are mating and hanging out.