Preheat oven to 300°F.

Rinse pumpkin seeds well to free them of pumpkin pulp and debris.

Drain the seeds thoroughly.

Place pumpkin seeds in a bowl.

Add olive oil and mix to coat.

Add lemon pepper, dry mustard, garlic pepper seasoning, brown sugar, liquid smoke, chili seasoning mix, and salt.

Mix well to evenly coat the seeds with the seasonings.

Pour the seasoned pumpkin seeds onto a large cookie sheet with sides.

Bake for 40-45 minutes, stirring several times while baking to ensure even cooking.

Immediately upon removing seeds from oven, sprinkle with additional garlic pepper if desired.

Let cool slightly before serving.