unconventional — not following traditional or established practices; innovative or unusual

a young chef enthusiastically prepares sushi using a waffle iron instead of traditional methods. She places rice and fish into the waffle maker and closes it with excitement. The waffle iron creates perfectly shaped square sushi pieces with crispy edges. Traditional sushi chefs nearby stop their work and stare in amazement at this new technique. Some lean in closer while others shake their heads but smile at the creative approach. someone not following traditional or established practices but being innovative and unusual