Preheat and prep the pan: Heat your oven to 425°F (220°C). Line a large rimmed sheet pan with parchment for easy cleanup.
Trim the asparagus: Snap off the woody ends. Toss the spears with 1 tablespoon olive oil, a pinch of salt, and pepper.
Spread them on one side of the pan.
Flatten thicker chicken: If your chicken breasts are thick, slice horizontally to make cutlets or gently pound to even thickness, about 1/2 inch. Even thickness helps even cooking.
Season the chicken: Pat dry, then sprinkle both sides with salt and pepper.
Make the “glue”: In a small bowl, mix mayonnaise (or yogurt), Dijon, garlic, and half the lemon zest. This helps the crust stick and keeps the chicken juicy.
Mix the crust: In another bowl, combine Parmesan, panko, Italian seasoning, smoked paprika, and a grind of pepper. Drizzle in 1 tablespoon olive oil and toss to coat the crumbs lightly.
Coat the chicken: Spread a thin layer of the mayo mixture over the top of each piece.
Press the Parmesan-panko mix firmly onto the coated side to form an even crust.
Arrange on the pan: Place chicken, crust side up, on the empty side of the sheet pan. Leave a little space between pieces for airflow.
Roast: Bake for 15–20 minutes, until the chicken reaches 165°F (74°C) in the thickest part and the crust is golden. Thinner cutlets may be done closer to 12–15 minutes.
Broil for extra color (optional): If you want a deeper crust, broil on high for 1–2 minutes, watching closely.
Finish with lemon and herbs: Squeeze lemon over the asparagus, sprinkle remaining zest over the chicken, and garnish with chopped parsley.
Serve: Plate the chicken with asparagus and pass extra lemon wedges.
Great with simple rice, mashed potatoes, or a light salad.