How to deal with jealous classmate?

I have this girl in my Spanish class who’s so envious of me. I cut my hair and I got so many compliments and when I walked into class today she started laughing and throwing shade. I ignored her of course. Then I always bring my lunch into that class. And that class is in the afternoon she got breakfast early and the morning and she couldn’t wait until the end of the day to pull it out and let me see it. I have a MacBook that I bring to class everyday and now she brings hers to class everyday too. Hers is also the same color as mine too. Not to mention every time I talk in class she always laughs or rolling her eyes. She’s so loud and obnoxious too. Every time I walk in class she’s always staring at me too. And she hates when I ignore her too, it really pisses her off. I’m just so tired of her. She really ruins my self esteem.
How to deal with jealous classmate?
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