Adapted from this.

For the burgers:
8 (1/2- thick) strips bacon
1 1/2 pounds ground chicken, 90 percent lean
2 tablespoons canola oil
Salt
Freshly ground black pepper
1/2 cup crumbled blue cheese
4 burger buns, split
1 large ripe beefsteak tomato, cut into 4 slices
1 ripe avocado, peeled, pitted and cut into 8 slices

For the vinaigrette:
2 tablespoons red wine vinegar
1 tablespoon fresh lemon juice
1 teaspoon Dijon mustard
1 teaspoon Worcestershire sauce
1 clove garlic, finely chopped
1/4 teaspoon sugar
1/4 teaspoon kosher salt
1/4 teaspoon freshly ground black pepper
3 tablespoons olive oil
1 cup finely shredded romaine lettuce

Place the strips of bacon on the grill (lay them across the grate so they don’t fall through) and grill for 3 to 4 minutes on each side, until golden brown and slightly crispy. Remove the bacon to a plate lined with paper towels. Increase the heat of the grill to high.

Form the meat into 4 (8-ounce) burgers, brush with the oil and season with salt and pepper on both sides. Grill the burgers until golden brown on both sides and cooked completely through, about 5 minutes per side. Top the burgers with the blue cheese, close the cover, and continue cooking until the cheese begins to melt, about 1 minute longer.

Place the burgers on the bottom half of each bun and top with a slice of tomato, 2 slices of avocado, 2 slices of bacon and some of the dressed romaine. Cover each burger with the bun tops and serve.
For the vinaigrette:

Whisk together the vinegar, lemon juice, mustard, Worcestershire, garlic, sugar, salt, pepper and oil in a small bowl. Cover and refrigerate for at least 30 minutes before using to allow the flavors to meld.

Just before assembling the burgers, place the romaine in a medium bowl and toss with the vinaigrette.