Credit: Kim Zolciak on Instagram

Wasn’t it so nice to have Kim Zolciak back on our TV screens Sunday night? The Real Housewives of Atlanta alum made her grand return on Watch What Happens Live, and it felt like no time had passed. But some fans were noting that Kim was a bit more quiet than usual — but why? Turns out, Kim was distracted by the fact that her lil’ guy KJ, 2, had just broken his leg!

After Kim joined up with Sheree Whitfield for a little QT with Andy Cohen in The Clubhouse, she took to Instagram to ask her followers what they thought of the show. Many said that Kim was a little quiet — some even said “boring”! — which prompted the Don’t Be Tardy star to explain her behavior.

“It was very hard for me to focus on WWHL because the day before my little guy KJ broke his leg!” Kim revealed in the caption of a shot featuring hubby Kroy Biermann holding a smiling (thank goodness!) KJ sporting a pretty snazzy orange and blue cast on his leg.

Kim then went on to share that her worries and a lack of sleep also contributed to her somewhat spaced-out appearance:

“I was worried sick! Took the latest flight I cud to make it on time and the 1st flight out Monday he is a trooper though! Soooo to answer your question THIS is why I was ‘a little quiet.’”

Totally understandable! We’re just glad that little Kroy, Jr. toughed it out and seems to be doing so well. Kids are resilient and we’re sure he’s picked up some of his dad’s athletic genes. KJ will be running around in no time!

Did you think Kim seemed quiet on the show Sunday? Tell us in the comments below.

Samantha Lear is an Assistant Editor at Wetpaint Entertainment. Follow her on Twitter and Google+!