Chickadee Signs First Promotional Deal ... I'm Making LiLo Money!

Chickadee can stop hawking snake oil ... the former reality star has landed a legit money-making deal sorta -- getting paid to tweet like other big celebs.

We've learned Anna Cardwell signed a deal with 310 Shakes to send out promotional tweets for its product ... similar to deals brokered for Lindsay Lohan, JWoww and Kyle Richards.

We're told Lindsay is paid around 5K to tweet for the company ... but it's unclear how much scratch Chickadee is getting.