It's stupid, but nowhere on the chase page did they tell you where to go, so I had to search for it myself.
Via http://www.ebtcardbalance.com/Washington-ebt-card-balance-eb37 I found a link to https://www.ebtedge.com/gov/portal/CardholderLogon.do?first=trueurl=ALL
It's legit. Just logged in and it showed me my balance. It doesn't require you to make an account. You only need your ebt card number and your pin.
I dunno if this'll work for people outside of Washington State. https://www.connectebt.com/ exists for a lot of other states, but WA wasn't on their list since we have ebtedge.