No worries.
Basically you want to create a list of JSON object instead of creating a list inside each variable.
So you can try to replace the expression in your third screenshot by
{
"rec" [Request Data each items's:formatted as text]
}
The :formatted as text operator allows you to build that JSON object for each item return by the request data.
See documentation : Operators and comparisons | Bubble Docs
So clicking the :formatted as text operator, bubble will ask you for the Content to show per list item and a delimiter.
In the content to show per list item you can add your JSON object.
{
"supplement":"This item supplement",
"daily_intake":"This item daily_intake",
...
}
In the delimiter a comma.