Start by hard-boiling the eggs in a pot of salted water for about 12 minutes, then transfer to an ice bath to cool completely. While the eggs cook, cook the bacon in a skillet over medium-high heat until crispy (about 2 minutes per side for thick slices), then drain on paper towels. Cook the chicken breast pieces seasoned with salt, pepper, and garlic powder in a skillet over medium-high heat for about 6-8 minutes until golden and cooked through. This parallel cooking approach means everything finishes around the same time, saving you 15+ minutes compared to sequential cooking.
Combine the shallot, mustard, olive oil, red wine vinegar, sugar, salt, and pepper in a jar with a tight-fitting lid. Shake vigorously for 30 seconds until the ingredients emulsify and the dressing becomes slightly creamy. The shallot will be finely distributed throughout, giving every bite consistent flavor. I like to make this dressing first so the shallot has time to soften slightly in the acid while you prep everything else.
Once the eggs have cooled, peel and dice them into 1/2-inch pieces. Chop the bacon into bite-sized pieces. Dice the tomatoes into 1/2-inch cubes, removing excess seeds to avoid a watery salad. Slice the avocados in half, remove the pit, and scoop into 1/2-inch cubes, then immediately toss with lemon juice to prevent browning. Keep the avocado separate from other ingredients until just before assembly.
Once the chicken from Step 1 has cooled slightly, transfer it to a bowl and toss with 2 tablespoons of the vinaigrette from Step 2. This seasons the chicken and keeps it moist. Let it sit for 2-3 minutes so the flavors absorb.
Place the lettuce mix on a large serving plate or platter, creating a bed about 2 inches thick. Arrange the dressed chicken, bacon pieces, diced eggs, tomatoes, avocado cubes, and gorgonzola in distinct rows or sections on top of the lettuce for the classic Cobb presentation. Sprinkle the chopped chives over everything. This organized presentation isn't just for show—it lets each person get a bite of every component.
Drizzle the remaining vinaigrette from Step 2 over the salad just before serving, or pass it on the side so each person can dress their salad to taste. Toss gently if desired to combine all components.