org-latex-format-inlinetask-function
    
    org-latex-format-inlinetask-function is a variable defined in `
ox-latex.el'.
Its value is 
ignore
-   This variable may be risky if used as a file-local variable.
Documentation:
Function called to format an inlinetask in LaTeX code.
The function must accept six parameters:
  TODO      the todo keyword, as a string
  TODO-TYPE the todo type, a symbol among `todo', `done' and nil.
  PRIORITY  the inlinetask priority, as a string
  NAME      the inlinetask name, as a string.
  TAGS      the inlinetask tags, as a list of strings.
  CONTENTS  the contents of the inlinetask, as a string.
The function should return the string to be exported.
For example, the variable could be set to the following function
in order to mimic default behavior:
(defun org-latex-format-inlinetask (todo type priority name tags contents)
"Format an inline task element for LaTeX export."
  (let ((full-title
	 (concat
	  (when todo
            (format "\\textbf{\\textsf{\\textsc{%s}}} " todo))
	  (when priority (format "\\framebox{\\#%c} " priority))
	  title
	  (when tags
            (format "\\hfill{}\\textsc{:%s:}"
                    (mapconcat 'identity tags ":")))))
    (format (concat "\\begin{center}\n"
		    "\\fbox{\n"
		    "\\begin{minipage}[c]{.6\\textwidth}\n"
		    "%s\n\n"
		    "\\rule[.8em]{\\textwidth}{2pt}\n\n"
		    "%s"
		    "\\end{minipage}}"
		    "\\end{center}")
	    full-title contents))
You can customize this variable.