In a shallow dish, combine the breadcrumbs, flour, garlic powder, dried thyme, salt, and pepper; stir to mix and set aside.
Place the chicken strips in a bowl and pour the buttermilk over them; stir to coat, cover, and refrigerate for 30 minutes to marinate.
Drain the chicken from the buttermilk. Working in batches, dredge the strips in the breadcrumb mixture, pressing to adhere a coating.
Coat a nonstick skillet with cooking spray and heat over medium. Add the olive oil and when hot, cook the chicken strips 3 minutes per side until cooked through and golden.
Arrange chopped romaine across 4 plates or bowls. Divide the cooked chicken strips and halved cherry tomatoes evenly among them.
Top each salad with about 2 tablespoons of honey Dijon dressing and 2 tablespoons (about 1/2 cup total divided) of crumbled blue cheese.