I am a chemical engineering student that applied to every chemical engineering job that was not oil and gas and I know other people that did the same.
TL;DR People want to work with renewables (growing industry), want to live in Atlanta (more opportunities), and want to enjoy work.
Reasons why:
-The biggest reason is likely that Clean Energy is especially big and is being pushed VERY HARD by Tech. We now have Energy Systems minor, which is essentially a study on emission science. Almost every chemical engineering class has renewables in some way or form in it. I took a papermaking class last semester, and the last few weeks all focused on biofuels made from wood residues. Do I own a car? Yes, but being from Chciago, 10% of my gas is ethanol, which wasn't as much of a thing 30 years ago. Its new and its growing, which is exciting for Georgia Tech students.
-Oil and Gas are (slowly) dieing industries. (although oil Comanches are part of the forefront for renewables) Clean Energy has nowhere to go but up. With gas prices down, the whole economic outlook for that industry isn't as good as specialty chemicals, food, consumer goods, paper, ect. Job security is important.
-Some people don't want to live in Houston or Baton Rouge. Let's face it, if you're oil or gas, there's a 99% chance you end up there. I don't mind either, I just would prefer to stay in Atlanta, Charlotte, or Chicago, and oil and gas aren't exactly the biggest industries in any of those cities. Most people I know want to try and stay in Atlanta.
-Horror Stories of people that work there. It pays hella good but all my friends stories about work hours, work environment, ect. have scared me off. I've interned 4 times, and 2 of them were with a natural gas company. The work environment there compared to my other two was just miserable. High Pressure, People got fired/quit while I was there, and few other red flags for full time employment. I know I would rather take a job I enjoy more then pays less. Its a trade off. People go both ways. Oil companies also have the (notoriously) strictest recruiting standards, and a lot of people (including myself) don't meet them, so there's really no need in investigating if I would make a smaller oil company if my GPA is 0.3 points too low for BP or Marathon.