The world champion comes to the Mandalika track on the island of Lombok just three points ahead of Jorge Martin in the standings, having seen a 66-pont lead eroded since the Catalan GP.
Bagnaia looked out of sorts on Friday in Indonesia and could only manage 16th after making a mistake on his final flying lap.
This had dropped him into Q1 for the first time since the Spanish GP in May, but he insisted he is not concerned as he was able to come through the first part of qualifying at Jerez to win the grand prix.
“In Jerez I was in Q1 and we won the race the day after,” Bagnaia said on Friday.
“So, I’m not so scared about it, not so worried about it. I know the problem we have to adjust on the electronics side is easier to improve.
“But will be very interesting tomorrow, because I think we have a very small racing line because outside is very dirty.
“Starting behind can be a problem because doing overtakes here is not easy, already in a normal situation, but here it’s even worse.”
Source: Autosport