“I’m the captain of the science team”
What does the science team do? As captain, do you try to help other students? It would seem to me (I am only guessing, I was never on a science team) that a science team might attract some students who are introverts, and as captain it might be a good idea to help some of them fit in. Did you do this?
I am wondering whether you can find a worthwhile essay topic from the science team.
“if you met me at a party, you’d immediately forget about me when I left”
I doubt that I would forget about your creme brulee’s. How do you make this? How did you learn to make it? Do you decorate your cookies and cakes when you make them? How did you get interested in cooking? Do you experiment with “alterations” in your recipe’s?
What do you like to do best? If it is baking, or the science team, you can talk about it. Both are constructive, productive activities.