The two-unit chain has put 20 stores in its pipeline since franchising began in July.
U.S. same-store sales fell for the first time in several years.
The chain plans to grow via streetside stores, ghost kitchens, and robotic kiosks.
The pizza concept has corporate units across Florida, Pennsylvania, and New Jersey.
Dining-in was less common in September compared to last year.
The Impossible Nuggets will be available in Des Moines, Iowa, Boston, and Miami.