Combine honey, dijon mustard, ground mustard, olive oil, apple cider vinegar, minced garlic, and salt in a small jar or bowl. Shake or whisk until well blended and smooth.
In a separate bowl, take one-third of your dressing and use it to marinate the chicken fillet. Allow it to sit for at least 30 minutes; if time permits, marinate for up to an hour for deeper flavor.
In a pan over medium heat, fry the bacon until crispy then remove it from heat and set aside on paper towels to drain excess fat. Using the same pan with some remaining drippings from bacon (or add olive oil), cook your marinated chicken until golden brown on both sides and cooked through.
In a large salad bowl or platter suitable for serving, start by laying down your sliced romaine lettuce as the base layer. Next add in all remaining ingredients like diced tomatoes, cubed avocado, corn kernels, red onion slices alongside crispy bacon bits.
Drizzle your reserved dressing over the assembled salad generously before topping it off with crumbled goat cheese if desired along with optional croutons for added crunchiness.