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.