This Parmesan Crusted Chicken Sheet Pan Dinner delivers golden, ultra-crispy Parmesan-coated chicken breasts roasted alongside colorful vegetables — all on a single pan in just 40 minutes. A simple Dijon mustard base locks the crunchy Parmesan and panko breadcrumb crust firmly onto juicy chicken, while broccoli, cherry tomatoes, zucchini, and red bell pepper caramelize beautifully in a hot oven. It's an effortless weeknight dinner that tastes far more impressive than the effort it requires, with minimal cleanup to match.
Large rimmed sheet pan (18x13 inch) Use two pans to avoid crowding chicken and vegetables
Parchment paper or aluminum foil For lining the pan for easy cleanup
Large mixing bowl For tossing vegetables with oil and seasoning
Small mixing bowl For mixing the Parmesan breadcrumb crust
Pastry brush or spoon For spreading Dijon mustard on chicken
Instant-read meat thermometer To confirm chicken reaches 165°F internally
Cutting board and knife For slicing vegetables
Tongs or spatula For serving
Meat mallet or rolling pin (optional) For pounding thick chicken breasts to even thickness
Ingredients
For the Chicken
4boneless skinless chicken breastsabout 6–8 oz each (170–225g each); pound to ½–¾ inch thickness if very thick
1cupParmesan cheeseabout 100g; freshly grated from a block for best results
½cuppanko breadcrumbsabout 30g; Japanese-style for maximum crunch
1teaspoongarlic powder
1teaspoonItalian seasoning
½teaspoononion powder
½teaspoonpaprika
salt and black pepperto taste; about ½ teaspoon each for the crust mixture, plus a pinch directly on the chicken
1tablespoonolive oilfor the Parmesan breadcrumb mixture
2tablespoonsDijon mustardabout ½ tablespoon per chicken breast; acts as a binder for the crust
For the Vegetables
2cupsbroccoli floretsabout 180g; cut into similar-sized pieces for even roasting
1cupcherry tomatoesabout 150g; left whole
1mediumzucchiniabout 200g; sliced into half-moons, approximately ¼ inch thick
1mediumred bell pepperabout 150g; sliced into strips
2tablespoonsolive oilfor coating vegetables before roasting
For Garnish (Optional)
fresh parsleychopped; for garnish
fresh lemona squeeze of juice over finished dish to brighten flavors
Instructions
Preheat your oven to 425°F (220°C). Line a large rimmed sheet pan with parchment paper or foil.
In a small bowl, combine the Parmesan, panko breadcrumbs, garlic powder, Italian seasoning, onion powder, paprika, salt, pepper, and 1 tablespoon olive oil. Toss with a fork until the mixture resembles coarse, slightly damp sand.
Pat chicken breasts completely dry with paper towels. If thicker than ¾ inch, pound to an even thickness and season both sides lightly with salt and pepper.
Spread about ½ tablespoon of Dijon mustard evenly over the top surface of each chicken breast using a pastry brush or spoon.
Press 3–4 tablespoons of the Parmesan breadcrumb mixture firmly onto the mustard-coated side of each breast. Place crust-side UP on the prepared sheet pan.
In a large bowl, toss the broccoli, cherry tomatoes, zucchini, and red bell pepper with 2 tablespoons olive oil, salt, pepper, and a pinch each of garlic powder and Italian seasoning. Spread in a single layer on the pan around the chicken (or on a second pan).
Bake at 425°F for 22–25 minutes, until the Parmesan crust is deep golden brown and an instant-read thermometer reads 165°F (74°C) at the thickest part of the chicken. Do not flip the chicken during baking.
Rest the chicken for 5 minutes before serving. Garnish with fresh parsley and a squeeze of lemon juice if desired, and serve alongside the roasted vegetables.
Notes
Grate Parmesan fresh from a block — pre-shredded varieties contain anti-caking agents that prevent proper crisping and browning.
Pat the chicken completely dry before applying mustard. Moisture on the surface is the biggest reason crusts don't stick or crisp.
Press the crust firmly onto the chicken with the palm of your hand. The harder you press, the thicker and crunchier the finished crust.
Do not flip the chicken during baking — the crust must stay on top the entire cook time to crisp properly.
Use two sheet pans if needed to avoid crowding. Overcrowded pans cause vegetables to steam instead of roast and prevent the crust from browning.
Chicken thighs work great as a substitute — they're more forgiving and stay juicier. Add about 5 extra minutes to the bake time.
Make-ahead tip: Apply the mustard and crust to the raw chicken and prep the vegetables up to 24 hours ahead. Cover and refrigerate, then let sit at room temperature for 15 minutes before baking.
Storage: Refrigerate leftovers in an airtight container for up to 4 days. Reheat in a 375°F oven for 10–12 minutes or in an air fryer at 375°F for 5–6 minutes to restore crispiness. Avoid the microwave if possible.
Swap the vegetables for any firm vegetable you have on hand — asparagus, green beans, mushrooms, cauliflower, Brussels sprouts, or baby potatoes all work well.
For a lemon-Parmesan variation, add 1 teaspoon of lemon zest directly to the breadcrumb mixture before applying to the chicken.