I have been going to Chen's for a really long time and I am in love with the Teriyaki chicken. It is the best in the valley. The service is really quick and maybe not super warm and welcoming but it's not usually uncomfortable.
The last time I went though I felt super rushed. My sister and I were on that side of town and arrived at about 8:40 and they close at 9:30. As we're sitting down to eat the man that sat us told us at least 3 times that that was when they closed. I got it the first time, and you continuing to say it makes me want to just go somewhere else so we aren't bothering you, even though there is almost an hour before you close. Put me off a little, but the food was still good and hot, and the cup of soup always makes me happy.
My only piece of advice is to not say anything about closing time until it's about 15 mins before you close. I am there to give you business, so don't make me feel like a nuisance.