I've had a few disappointments recently at Persis, but overall the food is still my favorite Indian in the University area.
if you are looking for something spicy, try the Gobi 65 appetizer. It's harsh and spicy but amazing! Unfortunately, the last time the Gobi was not crispy even though we ordered it extra extra crispy. When brought to the server's attention, he argued at first until we asked him to take it back to the kitchen. He returned shortly thereafter only to tell us that the kitchen said it was perfectly done. Since I've been to Persis and ordered this exact dish many times and it's always been crispy, I'm going to overlook it. But it was not a pleasant experience and made me reluctant to go back for a while. To be fair, the waiter later told us that the main chef was off that night, so I assume the Gobi got tossed in the sauce and left to get soggy for a few minutes. Timing is key on this dish.
We've also recently tried the Chicken Tikka appetizer, and it was great. It's served on a cast iron skillet with cabbage, onions and extra sauce in the bottom so no bite is without flavor.