Season the chicken breast with salt, pepper, and half of the minced garlic.
Heat a grill or skillet over medium-high heat and cook the chicken for 6-7 minutes per side until the internal temperature reaches 165 degrees Fahrenheit.
While the chicken cooks, prepare the dressing by whisking together the Greek yogurt, lemon juice, Dijon mustard, the remaining minced garlic, and olive oil in a small bowl.
Drain and rinse the chickpeas, then pat them dry with a paper towel.
Chop the romaine lettuce into bite-sized pieces and place them in a large bowl.
Toss the lettuce with the prepared dressing until evenly coated.
Slice the grilled chicken into strips.
Top the dressed lettuce with the sliced chicken, chickpeas, and shaved parmesan cheese.