The key is you haven't mentioned anything besides taking the cooking classes, even if you have consistency of courses and 8 cooking related classes by the end of your HS career. The advice of others - is spot on - what did you DO with it? Are you the teacher's chef apprentice? Duties? Appear on Chopped JR? How about put on your own version of it? Enter a state fair competition? Demonstrate cooking classes to an audience (of how many, what purpose, audience? etc). Coordinate an activity with other clubs? Like film club? They pick the film, you bring the food? Hopefully you are doing some very interesting things with the cooking.
No, I would not recommend taking another PE class. Do an organized varsity sport. But it's still going to look like window dressing as you are marking a bubble for senior year only, probably not captain, and probably no all-city/county/state or other level honors. It's going to be one lonely bubble mark in that vast list of sports.
The CFA for YOU is going to be important to show you have physical fitness. Go on your fact finding mission for each SA, print out the CFA instructions, make a chart of max and averages, and plan to max in as many elements as possible. Assuming your application window opens on 07/01/21, you have 125 days or 4 months and 5 days from TODAY to plan your CFA - and that's just when the window opens.