2 CHAINZ CHARGED WITH FELONY DRUG POSSESSION!

The Feds might be watching now -- 2 Chainz has just been charged with felony drug possession 10 MONTHS after his sizzurp arrest ...

According to official charging docs, the rapper was hit with one charge of codeine possession -- the main ingredient in sizzurp -- punishable by up to 3 years in prison.

2 Chainz was busted at LAX last June after TSA officials allegedly found the sizzurp ingredient in one of the rapper's checked bags.

He's scheduled to be arraigned next week.

SOURCE