Kylie Jenner's Getting Grilled Over Tyga's Dough

Kylie Jenner's now square in the middle of Tyga's financial nightmare, and it means she might have to sing like a canary about the expensive gifts he's bought her ... TMZ has learned.

According to docs obtained by TMZ ... Kylie's agreed to answer questions about her bf's finances. As we've reported ... celeb jeweler, Jason of Beverly Hills, is going after him for a $200k debt -- and this is the next step.

Since Tyga has a history of buying Kylie big ticket items, like a brand new Maybach, we're told the jeweler's law firm -- Abir, Cohen, Treyzon, and Salo -- wants to know everything he's gifted her.

The lawyers are set to privately meet with Kylie and Tyga within the next couple weeks. If they no-show, Jason's legal team says they'll push to have them arrested.

These are the same guys who got the warrant for Tyga's arrest last month, which forced him to pay up on a previous debt. They clearly mean business, and now Kylie's on notice too.