Full marks for originality! In its constraints, it reminded most of a puzzle in Monkey Island -- the infamous underwater scene, specifically.
I loved the idea of being joined to a chair (and a bomb), but I what I was missing was how it impacted the mechanics of the character. That is, I could still "walk around" and pick up items as if it was a standard point and click, I just had to click more often.
If you were to expand on the idea, I would love to see you find a way to incorporate the chair either a unique constraint to standard mechanics to dream up never-before-implemented lateral thinking puzzles. I can imagine some really devious ones involving using your chair as a lever, or by holding an inventory item between your teeth (you can only hold one, and the items are limited).
Or.. to go the narrative route make the chair an extension of the character the way that Full Throttle implemented the "boot" as a verb.
I had a blast. Thanks for sharing and best of luck in the jam.