Sometimes, yes. Sometimes, absolutely not.
If you are swapping an old fixture for a new pendant and there is already a ceiling box in place, it can be a manageable project. Turn off the breaker. Double check it is actually off. Match the wires. Secure the bracket. Done, in theory.
But that assumes a few things. The junction box needs to be properly installed and rated for the weight of the pendant. The wiring needs to be in good shape. And you need to feel comfortable working with electricity.
If there is no existing wiring where you want the light, that is a different story. Running new wire through a ceiling is not just a quick afternoon task. It can involve cutting drywall, navigating joists, and making sure everything meets local code. That is usually when an electrician earns their keep.
There is also the practical side. Holding a fixture overhead while connecting wires is harder than it sounds, especially if the pendant has some weight to it.
So yes, you can install a pendant yourself in the right situation. Just be honest about your experience level. If you are second guessing it, bringing in a professional is often the smarter move.
The goal is a light that feels effortless. Not a repair project waiting to happen.