making a game and wonder how I would change owner (my) chat font?

so I'm making a game and want my chat font (and only me) to have a dif font but the script I am trying to make just isn't working can someone please help?

local ServerScriptService = game:GetService("ServerScriptService")
local ChatService = require(ServerScriptService:WaitForChild("ChatServiceRunner"):WaitForChild("ChatService"))
local Players = game:GetService("Players")

local spec = {'specowos'}

ChatService.SpeakerAdded:Connect(function(PlrName)
 local Speaker = ChatService:GetSpeaker(PlrName)
 for _, v in pairs(spec) do
  if Players[PlrName].Name == v then
   Speaker:SetExtraData('Font', {{Font = "Arcade"}})
  end
 end
end)