brown stripes

Could you help me diagnose what might be going on with my plant? I just doubled the light intensity the other day so I'm thinking it may be a light burn but also it doesn't look like all the symptoms of a light burn. I'm talking about the brown spots, not the yellowing on the serrated edges on...

A few leaves have this rusted brown tiger strip look to them and are drooping. The rest of the plant is lush dark green. If any of you have seen this before please share your knowledge:)