Cut Swiss chard stems into very small pieces. Tear leaves into 2" pieces and rinse well (you’ll want some water still clinging to the leaves).
Heat oil in a large skillet over medium-high. Add chard stems, shallots, and garlic and season with salt. Cook, stirring occasionally, until vegetables are starting to soften but haven’t taken on any color, about 2 minutes.
Add chard leaves, season with salt, and cook, tossing occasionally, until leaves are tender and have released some liquid, about 3 minutes (stems will have a bit of crunch).
Mix in vinegar; taste and season with more salt if needed
Whisk together stay sauce, lime juice, ginger, garlic and red pepper flakes in a small bowl. Set aside
Using a spray bottle, lightly spray okra. If you do not have a spray bottle, place okra in a medium bowl and gently toss with olive oil until evenly coated.
When the skillet begins to smoke, arrange okra in skillet making sure not to overcrowd it. if you do not have enough space, cook okra in batches
Once one side of the okra is charred, about 2 minutes, rotate 90 degrees and continue searing. Do so until all sides are charred
Transfer to proper towel lined sheet tray. Sprinkle with salt and cool