Mine ticks and it seems to only be noticeable on the drivers side. My 08 F150 FX4 did it also, and I'm not worried about it. She's got 114K and runs awesome, and I'm running Mobil1 5w30. I do have the typical 1.5qt to 2.0qt oil consumption on a 5K oil change. Read all about it and on the 5.3L that's considered normal. Just gonna start changing the oil at 3K instead.
At least it's not as bad as my friends 2011 Ford with the 5.4L They told him it was normal for it to use up to 1qt every 1K!!!! Well 7K later it blew up because 1qt x 7K oil change = No Oil.... He got the engine replaced under warranty, but he doesn't trust it anymore and he's looking to sell it already.
I have an 04 Grand Cherokee with the 4.7L V8 with close to 200K and after a 5K oil change it's 1qt low. Every engine is different, but I read up on ours and there are fixes, but it's mainly due to WOT and oil getting pushed up into the intake or some oil slipping past the piston rings during the stroke, but as long as it stays the same I'm not worried. We'll see after the next oil change.