Can I yell at my girlfriend for throwing out my nachos?
Why would you resort to yelling?
She knows I'm serious about my nachos.
I understand you are angry that she threw away your food but yelling will not solve anything. She will yell back then there would be a back and forth argument between you two.
It is my right to yell at her.
Yelling at your partner will escalate the situation. It is better to mention it at a calm time so she will remember next time.