It symbolises who he his and how they each have something they are. Katniss is the girl on fire and Peeta is the boy with the bread. Also it is his family trade and when he threw it to Katniss he was just being nice because he liked her.
x
Hope
Peetas father bakes bread.
Peetas dad have gave Katniss cookies.
Peeta's mother is harsh and cold (she beat up her son when he burned a loaf of bread) while his father is caring and unselfish
It could be that Suzanne Collins got his name from Pita Bread. He comes from a family of bakers so it could simply be a play on words.
Bread commonly symbolizes sustenance, nourishment, and survival in literature. It can represent basic human needs, such as food and security, as well as social connections and community. Additionally, bread may symbolize the idea of sharing and communal bonds.
They are bakers.
Unleavened bread is bread without yeast. Today it could be tortillias. Yeast used to go bad very quickly an ussually distroyed the bread. Unleavened bread is bread without a flaw, or perfect bread.
Money. A job. A means of sustenance and survival.
Camo
Painting
Peetas love has a strong effect on the crowd. This will help out int he future.