Also: how many pax seats does your aircraft have? If less 10 or less it should be easier.
"SPECIFIC OPERATIONAL REQUIREMENTS
Due to the special characteristics of CHAMBERY airport surroundings, use
of this airport is bound by specific rules:
-general aviation flights with aircraft having a maximum passenger seating capacity of 10 and above, crew seats excepted: comply with article 1 below;
-general aviation flights with aircraft having a maximum passenger seating capacity of 20 and above, crew seats excepted: comply with articles 1, 2 and 3 below;
- commercial flights: comply with articles 1, 2 and 3 below. "
In case of any doubt, I'd suggest to contact the relevant authority and ask for guidance:
ta.dsac-ce at aviation-civile.gouv.fr