Attack of the Killer Tomatoes (1990)

The evil Dr Gangreen has created an army of mutant killer tomatoes to help him take over the world. During the mutation process he throws out one that's too big and slow, but it mixes with another experiment, and is transformed into a pretty girl! She escapes with one of the tomatoes, is chased, and gets rescued by a pizza-delivery boy. Together, they must try to thwart Gangreen's plots and rescue his tomatoes when possible, aided by Tara's mutant vegetable powers.