Translation:I am waiting for you at my place for the meal.
"I am waiting at my house for the meal"
What is wrong with that? "chez-" as I understand it means at someone's house. chez-nous, chez-vous, chez-moi, chez-lui, etc. "Je t'attends" means I am waiting for you. Je - me, attendre - to wait, te - you (as the direct object of the verb).