Hawaii produces 6.3 million lbs per year of bananas which is a tiny fraction of the 8 million metric tons per year Ecuador produces. Labor and land cost is the primary reason Hawaii can't compete with Latin America, but long-standing tariffs could change that.
About 2m people are employed directly or indirectly in the Ecuadorean banana industry. The total population of Hawaii is only 1.5m. Also you could fit Hawaii in a corner of Ecuador.
Unless you turned over all the islands exclusively to bananas, and forget about tourism, pineapples or anything else, you’re not even going to get close.
Hawaii is already heavily agricultural. Most of the non-agricultural land is reserved for conservation. Banana production would likely replace other production, and then we've got less of that stuff.
Also, shipping to continental US is limited by the Jones Act and the lack of capacity in US built, owned, and crewed shipping lines. Assuming a desire to produce things in the US, I don't think it's sensible to tarrif bananas to grow them in Hawaii, and then relax the Jones act so they can be shipped to the continental US on foreign carriers.
