Issue excel column header changed if it exist before?

CREATE TABLE #FinalExportList(TableCount INT IDENTITY(1,1),Cols NVARCHAR(MAX),TableName NVARCHAR(200))
insert into #FinalExportList(TableName,Cols)
values
('dbo.students','TRY_CONVERT(VARCHAR(MAX),StudentId) AS [StudentId], StudentName')

 DECLARE 
        @TableName NVARCHAR(200)
        ,@SQL NVARCHAR(MAX) = N''
        ,@PythonScript NVARCHAR(MAX) = N''
        ,@ExportFilePath NVARCHAR(MAX) = N''

        declare @ExportPath NVARCHAR(MAX)='G:\ImportExportExcel'
    
  SELECT @ExportPath = CASE WHEN RIGHT(@ExportPath,1) = '\' THEN @ExportPath ELSE CONCAT(@ExportPath,'\') END


  -- Just for testing purpose top 10 records are selected
 SELECT @SQL = CONCAT('SELECT TOP 10 ',Cols,' FROM ',TableName,';')
       ,@TableName = TableName
 FROM #FinalExportList 


SET @PythonScript = N'
FullFilePath = ExcelFilePath+TableName+".xlsx"
InputDataSet.to_excel(FullFilePath,sheet_name=TableName.split(".")[-1],index=False)'

 EXEC   sp_execute_external_script
       @language = N'Python'
      ,@script = @PythonScript
      ,@input_data_1 = @SQL
      ,@params = N'@ExcelFilePath NVARCHAR(MAX), @TableName NVARCHAR(200)'
      ,@ExcelFilePath = @ExportPath -- file path where Excel files are placed
      ,@TableName = @TableName
tables structure with data

 CREATE TABLE [dbo].[students]
    (
         [StudentId] [int] NOT NULL,
         [StudentName] [varchar](50) NULL,

          CONSTRAINT [PK_students] 
              PRIMARY KEY CLUSTERED ([StudentId] ASC)
                      WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, 
                            ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
     ) ON [PRIMARY]
     

     INSERT [dbo].[students] ([StudentId], [StudentName]) VALUES (1, N'ahmed')