Prep the oven and pan: Preheat your oven to 400°F (200°C).
Lightly grease a 9x13-inch baking dish with cooking spray or a thin layer of olive oil.
Prep the chicken: Pat the chicken dry with paper towels. If the breasts are very thick, slice them horizontally to create thinner cutlets or lightly pound to an even thickness of about 3/4 inch. This ensures even cooking and extra tenderness.
Make the garlic coating: In a medium bowl, stir together Greek yogurt, minced garlic, parmesan, olive oil, Dijon, onion powder, salt, pepper, smoked paprika, and lemon juice.
The mixture should be thick, creamy, and well-seasoned.
Taste and adjust: Give the sauce a quick taste and adjust salt or lemon if needed. It should be savory and garlicky with a gentle tang.
Coat the chicken: Add the chicken to the bowl and turn to coat each piece thoroughly. You want a generous, even layer on all sides.
Arrange to bake: Place the coated chicken in a single layer in the prepared dish.
Spoon any extra sauce over the top to avoid waste.
Bake: Bake uncovered for 18–25 minutes, depending on thickness, until the internal temperature reaches 165°F (74°C). The top should look lightly golden and set.
Optional broil: For more color, switch to broil for 1–2 minutes at the end. Watch closely to prevent burning.
Rest: Remove from the oven and let the chicken rest for 5–7 minutes.
This step keeps the juices from running out when you slice.
Garnish and serve: Sprinkle with chopped parsley. Serve with roasted vegetables, a crisp salad, or garlic butter rice to catch the extra sauce.