Step 1 – Mix the Patty Mixture: Combine ground chicken, panko, egg, Worcestershire, garlic powder, smoked paprika, onion powder, salt, pepper. Mix gently just until combined.
Step 2 – Shape and Chill the Patties: Shape 4 patties, ¾-inch thick, thumb dimple in center. Chill 15–20 min.
Step 3 – Cook the Patties: Cook 5–6 min per side until 165°F (74°C). Add cheddar last minute, cover to melt.
Step 4 – Toast the Brioche Buns: Toast cut-side down 1–2 min until golden.
Step 5 – Assemble and Serve: Mayo on bottom buns; layer lettuce, patty, tomato, onion, pickles. Serve hot.