Season the chicken thighs with salt and pepper.
Heat the oil and sear the chicken 5 to 6 minutes per side, until cooked through. Remove and let rest.
In the same skillet, combine the balsamic vinegar, honey, and garlic. Simmer 8 to 10 minutes, until reduced and glossy.
Slice the rested chicken and toss in the balsamic glaze to coat.
Bring the chicken broth to a simmer in a separate pot. Add the soy sauce and ginger, and simmer 10 minutes.
Stir in the 2 tablespoons balsamic vinegar off the heat, just before serving.
Cook the ramen noodles according to package directions and divide among bowls.
Ladle the broth over the noodles, then top with the balsamic chicken, spinach or bok choy, egg, and scallions.