Napa Cabbage Wedge With Sesame Ranch

Name: Napa Cabbage Wedge With Sesame Ranch
Ingredients: 6 oz. bacon slices; ⅓ cup extra-virgin olive oil; 3 Tbsp. unseasoned rice vinegar; 2 Tbsp. white or yellow miso; 1 Tbsp. tahini (such as Soom); 1 tsp. onion powder; 1 tsp. soy sauce; ½ tsp. toasted sesame oil; Kosher salt, freshly ground pepper; 1 small head of Napa cabbage; Thinly sliced chives, mild red pepper flakes (such as Urfa biber or Aleppo-style; optional), and toasted sesame seeds (for serving)