If you collect, try to get a hatchling. I collected a female about 3 years ago now. I thought she was a yearling
but later learned she was actually closer to 3 or 4 years old. The pic was taken shorly after I caught her. She was very difficult to acclimate. She lost weight rapidly for the first three months, refusing to eat enough to maintain her body weight.
I started her out in a 70 gallon tank. With a basking site of around 100 and fluorescents for UV and some rock hides. She didn't seem to understand the concept of a food bowl. I thought that the addition of a cb chuckwalla that was adapted to captivity might help. I ended up buying a cb chuck buddy, moving her into a 100 gallon, adding many more rocks with lots of tight crevices, covering all four sides of the tank with paper except for a small viewing window, buying a mercury vapor bulb and upping the basking temperature to 120 with a cool end in the mid to high 70's. The food bowl was positioned next to a crevice retreat. Seeing the cb chuck eat when I introduced him to the set-up really seemed to get her interested in eating and by about 6 months she was starting to regain some of her weight.
I had originally collected her to use in my educational presentations. She is, however, very antisocial to put it mildly and handling is very stressful for her. Over the course of a year I was able to slowly remove the paper from the front of the tank and she will even eat with me in the room if the meal is tempting enough. Her cb buddy has ended up being my educational animal.
Cbs also grow a lot faster. The hatchling was about the length of the female's tail when I introduced him. Within 6 months he almost equaled her in size and by the end of the year he was almost double.
I think people acclimating chucks in outdoor large pen set-ups have a much easier time. If you want a tame well acclimated animal try to go cb. If you go wc be prepared to spend a lot of time and money making sure the animal is happy. By the time I added up all the lighting upgrades, the tank upgrade, the cb buddy (he didn't come cheap) I ended up spending an arm and a leg.
Flowers are a very good appetite stimulant. I grow and feed the following, trying to feed at least 3 or 4 different items in each salad:
Dandelions (irresistible)
Catsear (very similar to dandelion)
Perennial marigold
Nasturtium leaves and flowers (they like both)
Hibiscus leaves and flowers
sweet alyssum
hollyhock flowers
mint leaves
cilantro
basil
alfalfa leaves and flowers
pansy flowers
grated carrots
grated butternut squash
fresh diced figs
When feeding grocery store greens, don't feed too many Brassicaceae (mustards, collards, cabbage etc). Mine are almost entirely vegetarian. The cb male will take insects, but I typically only give him a couple a month as a special treat.
Bright colored yellow, red and orange foods seem to be especially appealing. Once Gracie (my wc) started eating, about 85-90 percent of her diet was composed of dandelions; her choice. As she became more comfortable, she branched out. So far Iguana dust is the only supplement that they will both accept. I only supplement about once a week.
Good luck,
Alice
P.S. When I spoke to CDFG I was told that the legal possession limit was 2. If you breed, you have 45 days to give away or otherwise dispose of offspring (they can't be released). If you give babies away the recipients must stay within their bag limit: 2. You can apply for a captive propagation permit which would allow you to keep up to 30 (if I recall correctly), but CA chucks can't be propagated commercially (you couldn't sell the offspring). You can read up on the specifics on the CDFG website.