I'm going to fight a smaller kid my age for mocking me about my social awkwardness
How does he mock your social awkwardness?
He is a coward. He always pick on the weak.
As the bigger person you shouldn't get into physical altercations with smaller children. Learn to be more confident in yourself. Resorting to fighting will get only you in trouble.
I'm strong and I don't mind getting in a fight. I can take him.
That's not unexpected if you're bigger than him. Why not talk to him? Beating him up will only make you look like a bully.