How many chickens do you have?Thinking the coop may be too big for them.
How big is the coop?
"Too big" is not usually a problem. Unless it is so huge they get lost going from one side to the other, I would not worry about it. More space usually means less problems (less fighting and picking among the chickens, less stink, less frequent cleaning, etc.)
The usual guideline is at least 4 square feet per chicken in the coop, and at least 10 square feet per chicken in the run.
(This is assuming "coop" is a sheltered area where the chickens sleep and where they spend rainy days or cold days, and "run" is surronded by wire fencing but exposed to the weather. If you have really bad winters, you might make a sheltered area with 10 or more square feet per chicken and skip the run. In a hot climate, you might skip the coop entirely and just put a roof on the run, again with 10 or more square feet per chicken.)