The Colorado man whom authorities accused of killing his pregnant wife and two kids is upset — by the widespread coverage his case is receiving.

“He’s very frustrated. He didn’t know that everyone knows about the case,” a source who speaks with Chris Watts from Weld County Jail told People magazine.

Watts, 33, was arrested Aug. 15 and charged with the murders of his wife, Shanann, 34, and their daughters, Bella, 4, and Celeste, 3.

For more than a month, Watts has been spending 23 hours a day in his cell under suicide watch, with no TV or reading material.

Once a day, he’s allowed to go to a common room, where he has access to a communal newspaper.

It was only recently that he’s learned his case has been covered nationally, the source told the magazine.

And he’s not happy about how he’s being portrayed.

“He feels like no one understands him, and nobody knows what happened,” the source said. “He thinks if they did understand, they’d realize that he’s not the monster everyone says he is.”

Watts claimed his wife went berserk when he told her he wanted to separate and that she’s the one who murdered their daughters.

His arrest affidavit shows he confessed to strangling Shanann, who was 15 weeks pregnant — but he claims it was after he watched her kill Celeste.

“The gravity of the situation has hit him like a ton of bricks,” the source said. “Depression is setting in and he’s despondent.”

Watts hasn’t entered a plea yet and is due back in court in November.