This movie is "based on a true story" but it's not entirely true. Richard Montanez rose from the bottom to white collar marketing without a formal education and was involved in the Los Angeles marketing of Sabrositas in the 1990s several years after Flamin' Hot Cheetos were invented by people with MBAs in the Midwest. There is only one former employee who agrees with Montanez' exaggerated version of events, saying that there were competing ideas for Flamin' Hots in different parts of the country as portrayed at one point in the film. But the film is utter fiction. Richard Montanez was actually promoted to machinist fairly quickly by Frito-Lay and was not a janitor for over a dozen years as portrayed in the film. Eva Longoria is guilty of overstating the oppression and racism that Montenez experienced in his first couple of decades at Frito-Lay.
In fact the movie seems weirdly determined to present Southern Californian Mexican culture as the bottom rung on the ladder, when anyone who actually lives in the Southwestern U. S. and/or is affiliated in any way with the Latinx community knows that there were successful middle-class Mexican and South American immigrants in the L. A. area as far back as the 1950s and 60s. They certainly weren't all barely literate gangsters as late as 1992.
However, Flamin' Hot is fun and light-hearted to watch, and I guess it sends a good message to underprivileged kids living in poor Mexican communities about believing in themselves and giving an example of a successful member of their own community. Your mileage may vary.
