This is QDOBA restaurants - the Chipotle Mexican Grill competitor (from my perspective). Several QDoba's have opened where I live and they seem very similar to CMG to my untrained eye.
However, from a technical perspective (my "trained" eye), I see an EXHAUSTION pattern in the price action that suggests a meaningful amount of downside is possible here for JACK.
Do you see the H&S top and the rising wedge? Well, now you do because I labeled it. I had thought to leave it off and then click on the chart and have it toggle "ON" the graphics and "OFF" the graphics so you can see "BEFORE" and "AFTER".