Selling snacks can be profitable, but it depends on several factors such as the demand for the snacks, the cost of ingredients and production, the price point, the target market, and the competition.
If you have a unique or high-demand snack that you can produce and sell at a competitive price, there may be potential for profitability. You can also increase your profitability by selling in bulk to wholesalers, or by creating your own brand and sell through your own retail channels.
I'm very sure that selling of snacks is a very good business because personally, I am a sort of person that eats snacks a lot and I'm sure a lot of people do that too.