hasn't shed yet?

i was wondering if it is a bad sign that my male panther 5 1/2 mths old hasn't shed yet?
at what ages do they typically shed?

How long have you owned him, and please answer these questions:
Cage Info:
Cage Type - What kind of cage are you using? What is the size?
Lighting - What kind of lighting are you using? How long do you keep the lights on during the day?
Temperature - What temperature range have you created? Basking spot temp? What is the temperature at night?
Humidity - What are your humidity levels? How are you creating and maintaining these levels?
Plants - Are you using live plants? If so, what kind?
Location - Where is your cage located? Is it near any fans, air vents, or high traffic areas?

Chameleon Info:
Your Chameleon - The species, sex, and age of your chameleon.
Feeding - What are you feeding your cham? What amount? What kind of schedule? How are you gut-loading your feeders?
Supplements - What are you dusting your feeders with and what kind of schedule do you use?
Watering - What kind of watering technique do you use? Do you see your chameleon drinking?
Fecal Description - Briefly note colors and consistency from recent droppings.
History - Any previous information about your cham that might be useful to others when trying to help you.

i've had him a month now.
he is in a 100 gallow reptarium,he eats free roaming gut loaded(endive,collard greens,dandleion greens) crickets.
i currently have a standard bulb for the heating spot that is usually 85 to 90 ish.
i have a 10.0 retic sun tube bulb
i have a dripper and i mist 3 times a day.
his appetite seems to be doing better now that he has gotten settled in.
i have a pothos,a climbing vine(can't remember the name but know it is safe),a fiscus,and a few fake vines.

sounds like your doing alright..i would make sure your humidity is around 60%

You have had him for 1 month? It is likely he shed before you received him. O don't know that 5 1/2 month old panthers shed more than once a month, if that often.