In a mixing bowl, combine ground chicken, garlic powder, onion powder, paprika, salt, black pepper, egg, and breadcrumbs. Mix until well combined.

Form the mixture into 4 equal patties.

Preheat the grill to medium-high heat.

Cook the chicken patties on the grill for about 6-7 minutes per side, or until the internal temperature reaches 165°F (75°C).

If using cheese, add a slice on top of each patty during the last minute of cooking to melt.

Spread mayonnaise on the bottom half of each toasted burger bun.

Place a cooked chicken patty on each bun, followed by lettuce, tomato, and pickles.

Top with the other half of the bun and serve immediately.