Pat the chicken breast dry with paper towels and season both sides evenly with garlic powder, dried oregano, sea salt, and black pepper.
Heat 1 teaspoon of olive oil in a medium skillet over medium-high heat. Once hot, add the chicken and sear for 6-7 minutes per side until the exterior is golden brown and the internal temperature reaches 165°F.
While the chicken cooks, prepare the dressing by whisking together the Greek yogurt, 0.5 tablespoon olive oil, lemon juice, Dijon mustard, minced garlic clove, and anchovy paste in a small bowl until smooth and creamy.
Wash and chop the romaine lettuce into bite-sized pieces and place them in a large mixing bowl.
Remove the chicken from the pan and let it rest for 3 minutes before slicing it into thin strips.
Toss the romaine lettuce with the prepared Caesar dressing until every leaf is well-coated.
Transfer the dressed greens to a plate and top with the sliced chicken, parmesan cheese, and chickpeas for a satisfying crunch.