Sounds like the lunchbox peppers you can get at the store. I've been growing them in the garden for the past couple years but rarely do they get as large as those in the store.
Funny thing of late is when you purchase plants and think you're getting what the tag says, occasionally you get something else. Again this happened to me at 2 different stores. My Gladiator Roma tomatoes are nothing but a regular tomato and my red lunchbox peppers are jalopeno peppers which I don't need at the moment. My sister and I have been taking cuttings off the plants in our garden and growing them in our heated garages under grow lights all winter long because we're getting tired of getting miss labeled plants. A friend of mine likes those peppers with just plain old cream cheese stuffed in them too.