First of all, don't have your heart set on getting a pilot slot, much less a fighter. That community is being drawn down dramatically. Apply to be an officer first, then a pilot, then a fighter pilot. Don't be the guy that cries when you don't get what you want. That being said, check out this site first:
https://www.afoats.af.mil/
Lots of good info on various methods of commissioning. Your degree type will probably not have the same weight as your accomplishments while enlisted do. However if it's down to you with an engineering degree or another dude with a basket weaving degree, they would probably favor the engineering/technical degree. I just got picked up for OTS with a Pro Aero degree from ERAU. Very non-technical but apparently it was good enough. Generally UPT slots are given to USAFA first, then ROTC then OTS for whatever the first two can't fill. If UPT is your end goal, start working on a PPL now and get as many flight hours as you can. Go take the AFOQT and blow that shit out of the water. If the scores aren't so great the first time, you can take it a second time but don't screw it up, otherwise you'll need a waiver for your third attempt. If you're thinking about OTS, check out https://www.airforceots.com and search for answers to your many questions. Other than that, get as many XXXX of the Year/Quarter awards as you can and don't screw up! Talk to prior guys you work with, they'll be able to help you out as well. Good luck!