The ft bearings are a pair of ball bearings in an assembly. Unlike regular tapered bearings you won't feel any slop until they're completely destroyed (you want to replace them before that happens...
So, it could absolutely be ft brgs, it could also be something in the tire so give that a good look! Just like a axle brg in the rear, a "clicking" noise can
indicate a bad brg..
If you jack-up that side and push the pads back into the caliper, to stop the brake & rotor from influencing the feel, you should be able to feel a bad brg.. It might have a bit of slop but, more importantly, it will have bad spots you can feel while rotating.
You could also compare it to how the other side "feels"....
Your truck is over 10yrs old, if they you've got normal mileage and they're the original brgs., chances are you need them by now